This article lists characters in the various canonical incarnations of Star Trek. This includes fictional main and major characters created for the franchise.
Key
Main and recurring characters
{| class="wikitable sortable mw-collapsible" style="text-align:left"
|-
! Character
! Actor(s)
! Appearances
! Rank
! Posting
! Position
! Species
|- id="A"
| rowspan="2" | Airiam
| Sara Mitich
| rowspan="2" | Seasons 1–2 <small>(DSC)</small>
| rowspan="2" | Lt. Commander
| rowspan="2" | USS Discovery
| rowspan="2" | Science officer
| rowspan="2" | Human cyborg
|-
| Hannah Cheesman
|-
| Jonathan Archer
| Scott Bakula
| Seasons 1–4 <small>(ENT)</small>
| Captain
| Enterprise NX-01
| Commanding officer
| Human
|-
| Asencia
| Jameela Jamil
|Seasons 1-2 <small> (PRO)</small>
| Civilian <br/>Ensign
|Solum<br/> USS Dauntless
|Tyrant <br/> Navigator
|Vau N’Akat
|-he
| Soji Asha
| Isa Briones
| Seasons 1-2 <small>(PIC)</small>
| Civilian
| Romulan Reclamation Site
| Anthropologist
| Android
|-
| Ayala
| Tarik Ergin
| Seasons 1–7 <small>(VOY)</small>
| Lieutenant, JG <small>(provisional)</small>
| USS Voyager
| Helmsman <small>(S7)</small> <br />Security officer <small>(S1-7)</small> <br />Maquis <small>(previous)</small>
| Human
|-
| Azan
| Kurt Wetherill
| Seasons 6–7 <small>(VOY)</small>
| Civilian
| USS Voyager Passenger
|
| Wysanti/xB
|- id="B"
| Reginald Barclay
| Dwight Schultz
| Seasons 3–4,6–7 <small>(TNG)</small> <br />Movies <small>(FCT)</small> <br />Seasons 2,6–7 <small>(VOY)</small>
| Lt. Commander <small>(VOY)</small> <br />Lieutenant, JG <small>(TNG, FCT)</small>
| Starfleet Command <small>(VOY)</small> <br />USS Enterprise-E <small>(FCT)</small> <br />USS Enterprise-D <small>(TNG)</small>
| Pathfinder Project <small>(VOY)</small> <br />Engineering officer <small>(TNG, movies)</small>
| Human
|-
| Bareil Antos
| Philip Anglim
| Seasons 1–3,6 <small>(DS9)</small>
| Vedek
| Bajor resident
| Bajoran religious leader <small>(S1-3)</small>
| Bajoran
|-
| Julian Bashir
| Alexander Siddig
| Seasons 1–7 <small>(DS9)</small> <br />Season 6 <small>(TNG)</small>
| Lieutenant <small>(S4-7)</small> <br />Lieutenant, JG <small>(S1-3)</small>
| Deep Space 9
| Chief medical officer
| Human
|-
|Marie Batel
|Melanie Scrofano
|Seasons 1–3<small>(SNW)</small>
| Captain
|USS Cayuga (Seasons 1-2)
| Commanding officer
|Human
|-
| B'Etor
| Gwynyth Walsh
| Seasons 4–5,7 <small>(TNG)</small> <br />Movies <small>(GEN)</small> <br /> Season 1 <small>(DS9)</small>
| Commander, Klingon Empire
| Bird of Prey
| First officer
| Klingon
|-
| Brad Boimler
| Jack Quaid
|Seasons 1-5 <small>(LOW)</small> Season 2 <small> (SNW) (Those Old Scientists)</small>
| Ensign (Seasons 1-3) <br />Lieutenant, JG (Season 4)
|USS Cerritos (Seasons 1-4), USS Titan (Season 2)
|
| Human
|-
|Cleveland "Book" Booker
|David Ajala
|Seasons 3-5 <small> (DSC)</small>
|Civilian
|USS Discovery 1031-A
|Courier, Starfleet consultant
|Kwejian
|-
| Boothby
| Ray Walston
| Season 5 <small>(TNG)</small> <br />Season 5 <small>(VOY)</small>
| Civilian
| Starfleet Academy
| Groundskeeper
| Human
|-
| rowspan="3" | Borg Queen
| Alice Krige
| rowspan="3" | Seasons 5–7 <small>(VOY)</small> <br />Movies <small>(FCT)</small><br />Season 2 <small>(PIC)</small>
| rowspan="3" | None
| rowspan="3" | Borg Collective
| rowspan="3" | Leader of Borg Collective
| rowspan="3" | Borg
|-
| Susanna Thompson
|-
| Annie Wersching
|-
| Phillip Boyce
| John Hoyt
| "The Cage"
| Lt. Commander
| USS Enterprise
| Chief medical officer
| Human
|-
| Brunt
| Jeffrey Combs
| Seasons 3–7 <small>(DS9)</small>
| Civilian
| Ferenginar resident
| Ferengi commerce liquidator
| Ferengi
|-
| Ronald Altman Bryce
| Ronnie Rowe Jr.
| Seasons 1–3 <small>(DSC)</small>
| Lieutenant Commander <small> (DSC S4)</small> <br/>Lieutenant, JG
|USS Curie <small> (DSC S4)</small> <br/>USS Discovery
| Communications officer
| Human
|-
| Gabrielle Burnham
| Sonja Sohn
| Seasons 2-3 <small>(DSC)</small>
| None
| Section 31
| Intelligence operative <br />Astrophysicist
| Human
|-
|rowspan="2"|Michael Burnham
| Sonequa Martin-Green
| rowspan="2"|Seasons 1–5 <small>(DSC)</small>
| rowspan="2"|Captain <small>(S4-5)</small> Commander <small>(S1-3</small> <br />Crewman <small>(S1)</small>
| rowspan="2"|USS Discovery <small>(S1-2)</small> <br />USS Shenzhou <small>(S1)</small>
| rowspan="2"|Captain <small> (S4-5)</small><br/>First officer <small> (S3)</small> <br/>Science officer <small>(S2)</small> <br /> Science specialist <small>(S1)</small> <br />First officer <small>(S1)</small>
| rowspan="2"|Human
|-
|Arista Arhin (as a child)
|- id="C"
| Joseph Carey
| Josh Clark
| Seasons 1,5–7 <small>(VOY)</small>
| Lieutenant
| USS Voyager
| Engineering officer
| Human
|-
| Chakotay
| Robert Beltran
| Seasons 1-2 <small> (PRO)</small> <br/>Seasons 1–7 <small>(VOY)</small>
| Captain<br />Commander <small>(provisional)</small>
|USS Protostar <small> (PRO S1) </small> <br/>USS Voyager S1-7
| Captain <small> (PRO S1)</small> <br/>First officer <small>(VOY S1-7)</small> <br />Maquis <small>(S1)</small>
| Human
|-
| rowspan="2" | Christine Chapel
| Majel Barrett
| Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, TVH)</small>
| Commander <small>(TMP, TVH)</small> <br />Crewman <small>(TOS, TAS)</small>
| Starfleet Command <small>(TVH)</small> <br />USS Enterprise <small>(TOS, TAS, TMP)</small>
| Starfleet Command officer <small>(TVH)</small> <br />Medical officer <small>(TMP)</small> <br />Nurse <small>(TOS, TAS)</small>
| rowspan="2" | Human
|-
| Jess Bush
|Seasons 1-3 <small>(SNW)</small>
|Crewman <small>(SNW)</small>
|USS Enterprise <small>(SNW)</small>
|Nurse <small>(SNW)</small>
|-
| rowspan="2" | Pavel Chekov
| Walter Koenig
| Seasons 2–3 <small>(TOS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC, GEN)</small> <br />Season 5 <small>(DS9)</small>
| Commander <small>(WOK, SFS, TVH, TFF, TUC, GEN)</small> <br />Lieutenant <small>(TMP)</small>
| USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Reliant <small>(WOK)</small> <br />USS Enterprise <small>(TOS, TMP, SFS)</small>
| Chief security officer <small>(SFS, TVH, TFF, TUC)</small> <br />First officer <small>(WOK)</small> <br />Weapons officer <small>(TMP)</small> <br />Navigator <small>(TOS)</small>
| rowspan="2" | Human
|-
| Anton Yelchin
|ST09, STID, STB
|Ensign (ST09, STID, STB)
|USS Enterprise <small>(ST09, STID, STB)</small>
|Navigator <small>(ST09, STID, STB)</small>
|-
| rowspan=2| Una Chin-Riley ('Number One')
| Majel Barrett
| rowspan=2| "The Cage" <br />Season 2 <small>(DSC)</small> <br /> Seasons 1-2<small> (SNW)</small>
| rowspan=2|<br />Commander <br />Lt. Commander
| rowspan=2| USS Enterprise
| rowspan=2| First officer
| rowspan=2| Illyrian
|-
| Rebecca Romijn
|-
| J. M. Colt
| Laurel Goodwin
| "The Cage"
| Yeoman
| USS Enterprise
| Yeoman
| Human
|-
| Katrina Cornwell
| Jayne Brook
| Seasons 1-2 <small>(DSC)</small>
| Vice Admiral
| Starfleet Command
| Admiral of Starfleet
| Human
|-
| rowspan="2" | Kimara Cretak
| Adrienne Barbeau
| rowspan="2" | Season 7 <small>(DS9)</small>
| rowspan="2" | Senator
| rowspan="2" | Deep Space 9
| rowspan="2" | Romulan representative
| rowspan="2" | Romulan
|-
| Megan Cole
|-
| Beverly Crusher
| Gates McFadden
| Seasons 1,3–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br /> Season 2 <small>(PRO)</small> <br />Season 3 <small>(PIC)</small>
| Admiral <br/> Civilian <br/>Commander
|Starfleet Command <br/> SS Eleos XII <br /> <br/>USS Enterprise-E <small>(FCT, INS, NEM)</small> <br />USS Enterprise-D <small>(S1,3-7, GEN)</small> <br />Starfleet Command <small>(S2)</small>
| Head of Starfleet Medical <small> (PIC S5)</small> <br/>Civilian doctor associated with the humanitarian organization Mariposas <small>(PIC S5, LOW S4)</small> <br/>Chief medical officer <small>(S1, 3–7, movies)</small> <br />Head of Starfleet Medical <small>(S2)</small>
| Human
|-
| Jack Crusher
| Ed Speleers
| Season 3 <small>(PIC)</small> <br /> Season 2 <small>(PRO)</small>
| | Ensign <br/> Civilian
|USS Enterprise NCC-1701-G <br /> SS Eleos XII <br/>
|Special counselor to the captain <br /> Civilian associated with the humanitarian organization Mariposas
|Human
|-
| Wesley Crusher
| Wil Wheaton
| Seasons 1–4,5,7 <small>(TNG)</small> <br />Season 2 <small>(PRO)</small><br />Season 2 <small>(PIC S2)</small><br />Movies <small>(NEM)</small>
|Civilian <small> (PIC S2)</small>, <small> (PRO S2)</small><br/> Lieutenant, JG <small>(NEM)</small> <br />Cadet <small>(S4-7)</small> <br />Ensign <small>(S3-4)</small> <br />Ensign <small>(acting)</small> <small>(S1-3)</small> <br />Civilian <small>(S1)</small>
| <br/>USS Titan <small>(NEM)</small> <br />Starfleet Academy <small>(S4-7)</small> <br />USS Enterprise-D <small>(S1-4)</small>
| Traveler <small> (PIC S2) </small>, <small> (PRO S2)</small> <br/>Engineering officer <small>(NEM)</small> <br /> Starfleet cadet <small>(S4-7)</small> <br />Helmsman <small>(S1-4)</small>
| Human
|-
| Hugh Culber
| Wilson Cruz
| Season 1–5<small>(DSC)</small>
| Commander <br/>Lt. Commander
| USS Discovery
| Doctor
| Human
|-
| Jal Culluh
| Anthony De Longis
| Seasons 1–3 <small>(VOY)</small>
| First Maje
| Kazon-Nistrim
| Leader of Kazon-Nistrim
| Kazon
|-
| Elizabeth Cutler
| Kellie Waymire
| Season 1 <small>(ENT)</small>
| Crewman
| Enterprise NX-01
| Entomologist
| Human
|- id="D"
| Leonardo da Vinci
| John Rhys-Davies
| Seasons 3–4 <small>(VOY)</small>
| None
| USS Voyager Program
| Holographic character
| Hologram
|-
| Damar
| Casey Biggs
| Seasons 4–7 <small>(DS9)</small>
| Legate <small>(S7)</small> <br />Gul <small>(S6-7)</small> <br />Glinn <small>(S4-6)</small>
| Cardassia Prime<br />CMS Groumall <small>(S4)</small>
| Leader of Cardassian Union <small>(S7)</small> <br />Dominion leader <small>(S6-7)</small> <br />Vigilante <small>(S5)</small> <br />Cardassian officer <small>(S4)</small>
| Cardassian
|-
| rowspan="2" |Daniels <br /> /Kovich
|David Cronenberg
| rowspan="2" |Seasons 3-5 <small> (DSC)</small> <br /> Seasons 1–4 <small>(ENT)</small>
| rowspan="2" |Federation official <br /> Crewman
|rowspan="2" |Federation Headquarters <br /> Unknown
|rowspan="2" |Scientist in cognitive science, with specialties in artificial sentience and intelligence <br /> Temporal agent
| rowspan="2" |Mostly Human
|-
|Matt Winston
|-
| Data
| Brent Spiner
| Seasons 1–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br />Season 1 <small>(PIC)</small>
| Lt. Commander
| USS Enterprise-E <small>(FCT, INS, NEM)</small> <br />USS Enterprise-D <small>(S1-7, GEN)</small>
| Chief operations officer <small>(TNG, GEN, FCT, INS, NEM)</small>
| Android
|-
| Ezri Dax
| Nicole de Boer
| Season 7 <small>(DS9)</small>
| Lieutenant, JG <small>(S7)</small> <br />Ensign <small>(S7)</small>
| Deep Space 9
| Counselor
| Trill
|-
| Jadzia Dax
| Terry Farrell
| Seasons 1–6 <small>(DS9)</small>
| Lt. Commander <small>(S4-6)</small> <br />Lieutenant <small>(S1-3)</small>
| Deep Space 9
| Chief science officer
| Trill
|-
| Degra
| Randy Oglesby
| Season 3 <small>(ENT)</small>
| Civilian
| Xindi Council
| Scientist
| Xindi-Primate
|-
| Keyla Detmer
| Emily Coutts
| Seasons 1–3 <small>(DSC)</small>
| Lieutenant <small>(S1-2)</small> <br />Lieutenant, JG <small>(S1)</small>
| USS Discovery <small>(S1-2)</small> <br />USS Shenzhou <small>(S1)</small>
| Helmsman
| Human
|-
| The Doctor
| Robert Picardo
| Seasons 1–7 <small>(VOY)</small>
| None
| USS Voyager
| Chief medical officer
| Hologram
|-
| Dolim
| Scott MacDonald
| Season 3 <small>(ENT)</small>
| Commander
| Xindi Council
| Council member
| Xindi-Reptilian
|-
| Dukat
| Marc Alaimo
| Seasons 1–7 <small>(DS9)</small>
| Gul
| Cardassia Prime
| Religious leader <small>(S6-7)</small> <br />Leader of Cardassia <small>(S5)</small> <br />Vigilante <small>(S4-5)</small> <br />Freighter commander <small>(S4)</small> <br />Cardassian officer <small>(S1-4)</small>
| Cardassian
|- id="E"
| Michael Eddington
| Kenneth Marshall
| Seasons 3–5 <small>(DS9)</small>
| Civilian <small>(S4-5)</small> <br />Lt. Commander <small>(S3-4)</small>
| Deep Space 9 <small>(S3-4)</small>
| Maquis <small>(S7)</small> <br />Security officer <small>(S5-7)</small> <br />
| Human
|-
| Elnor
| Evan Evagora
| Seasons 1-2 <small>(PIC)</small>
| Cadet <small>(S2)</small> <br />Qowat Milat <small> (S1)</small>
| USS Excelsior <small>(S2)</small> <br />Vashti resident <small> (S1)</small>
| Starfleet cadet <small>(S2)</small> <br />Qalankhkai to Picard <small> (S1)</small>
| Romulan
|-
|Kova Rin Esmar
|Jin Maley
|Season 3 <small> (PIC)</small>
| Ensign
|USS Enterprise NCC-1701-G <small>(PIC S3)</small> <br/> USS Titan (NCC-80102-A) <small> (PIC S3)</small>
|Communications officer
|Haliian
|-
| Evek
| Richard Poe
| Season 7 <small>(TNG)</small> <br />Season 2 <small>(DS9)</small> <br />Season 1 <small>(VOY)</small>
| Gul
| CMS Vetar
| Commanding officer
| Cardassian
|- id="F"
| Female Changeling
| Salome Jens
| Seasons 3–4,6–7 <small>(DS9)</small>
| None
| Cardassia Prime
| Leader of Dominion
| Changeling
|-
| Vic Fontaine
| James Darren
| Seasons 6–7 <small>(DS9)</small>
| None
| Deep Space 9 Program
| Holographic entertainer
| Hologram
|-
| Maxwell Forrest
| Vaughn Armstrong
| Seasons 1–4 <small>(ENT)</small>
| Vice Admiral
| Starfleet Command
| NX Project
| Human
|-
|Alonzo Freeman
|Phil LaMart
|Seasons 1-4 <small> (LOW)</small>
|Admiral
|Starfleet Command
|Flag officer
|Human
|-
|Carol Freeman
|Dawnn Lewis
|Seasons 1-5 <small> (LOW)</small>
|Captain
|USS Cerritos
|Commanding officer
|Human
|- id="G"
| Elim Garak
| Andrew Robinson
| Seasons 1–7 <small>(DS9)</small>
| Civilian
| Deep Space 9 resident
| Tailor
| Cardassian
|-
| Garrison
| Adam Roarke
| "The Cage"
| Chief petty officer
| USS Enterprise
| Communications officer
| Human
|-
| Philippa Georgiou
| Michelle Yeoh
| Seasons 1-3 <small>(DSC)</small> <br /> Season 1<small> (S31)</small>
| Captain<small> (S1)</small>
| NCIA-93<small> (S2)</small> <br />Section 31<small> (S1-3)</small> <br />USS Shenzhou<small> (S1)</small>
| Intelligence operative<small> (S1-3)</small> <br /> Emperor, Mirror Universe<small> (S1)</small> <br />Commanding officer<small> (S1)</small>
| Human
|-
| Sonya Gomez
| Lycia Naff
| Season 2 <small>(TNG)</small> <br />Season 2 <small>(LOW)</small>
| Ensign
| USS Enterprise-D
| Engineering officer
| Human
|-
| Gowron
| Robert O'Reilly
| Seasons 4–6 <small>(TNG)</small> <br />Seasons 3–7 <small>(DS9)</small>
| Chancellor
| Klingon High Council
| Chancellor of Klingon Empire
| Klingon
|-
| rowspan="4" | Amanda Grayson
| Jane Wyatt
| Season 2 <small>(TOS)</small> <br />Movies <small>(TVH, TFF)</small>
| rowspan="4" | Civilian
| rowspan="4" | Vulcan resident
| rowspan="4" |Teacher
| rowspan="4" | Human
|-
| Majel Barrett
| Seasons 1 <small>(TAS)</small>
|-
| Winona Ryder
|ST09
|-
| Mia Kirshner
|Season 1 <small>(DSC)</small><br />Season 2 <small>(SNW)</small>
|-
| Guinan
| Whoopi Goldberg
| Seasons 2–6 <small>(TNG)</small> <br />Movies <small>(GEN, NEM)</small> <br />Season 2 <small>(PIC)</small>
| Civilian
| USS Enterprise-D
| Bartender
| El-Aurian
|-
|Gwyndala "Gwyn"
|Ella Purnell
|Seasons 1-2 <small> (PRO)</small>
|Civilian
|USS Protostar NX-76884
|Captain <small> (S2)</small> <br/>Communications officer <small> (S1)</small>
|Vau N'Akat
|- id="H"
| J. Hayes
| Steven Culp
| Season 3 <small>(ENT)</small>
| Major
| Enterprise NX-01
| MACO officer
| Human
|-
|-
| Hemmer
| Bruce Horak
| Season 1 <small>(SNW)</small>
| Lieutenant
| Enterprise NCC-1701
| Chief Engineer
| Aenar
|-
| Erika Hernandez
| Ada Maris
| Season 4 <small>(ENT)</small>
| Captain
| Columbia NX-02
| Commanding officer
| Human
|-
| Hogan
| Simon Billig
| Seasons 2–3 <small>(VOY)</small>
| Ensign <small>(provisional)</small>
| USS Voyager
| Engineering officer <br />Maquis <small>(previous)</small>
| Human
|-
| Mr. Homn
| Carel Struycken
| Seasons 1–5 <small>(TNG)</small>
| Civilian
| Betazed resident
| Servant
| Unknown
|-
| Hugh
| Jonathan Del Arco
| Seasons 5–7 <small>(TNG)</small> <br />Season 1 <small>(PIC)</small>
| None
| Romulan reclamation site
| Borg drone <small>(TNG)</small> <br />Director of Romulan reclamation site <small>(PIC)</small>
| Borg <small>(TNG)</small> <br />Human/xB <small>(PIC)</small>
|- id="I"
| rowspan="2" | Icheb
| Manu Intiraymi
| Seasons 6–7 <small>(VOY)</small>
| Civilian <small>(VOY)</small>
| USS Voyager resident <small>(VOY)</small>
| Astrometrics <small>(VOY)</small>
| rowspan="2" | Borg <small>(VOY S6)</small> <br />Brunali/xB <br /><small>(VOY S6-7, PIC)</small>
|-
| Casey King
|Season 1 <small>(PIC)</small>
|Lieutenant <small>(PIC)</small>
|USS Coleman <small>(PIC)</small>
|Command officer <small>(PIC)</small>
|-
| Ilthuran/The Diviner
| John Noble
|Seasons 1-2 <small> (PRO)</small>
| Civilian
|Solum<br/> Tars Lamora
|Astronomer <br/> Prison colony tyrant
|Vau N’Akat
|-
| rowspan="2" | Ishka
| Cecily Adams
| rowspan="2" | Seasons 3, 5–7 <small>(DS9)</small>
| rowspan="2" | Civilian
| rowspan="2" | Ferenginar resident
| rowspan="2" | Philanthropist
| rowspan="2" | Ferengi
|-
| Andrea Martin
|- id="J"
| Kathryn Janeway
| Kate Mulgrew
| Seasons 1–7 <small>(VOY)</small> <br />Movies <small>(NEM)</small> <br>Seasons 1-2 <small> (PRO)</small>
| Vice Admiral <small>(NEM)</small> <br />Captain <small>(VOY)</small>
| Starfleet Command <small>(NEM)</small> <br/>USS Dauntless <small> (PRO)</small> <br />USS Voyager <small>(VOY)</small>
| Starfleet Admiral <small>(NEM)</small> <br />Commanding officer <small>(VOY)</small>
| Human
|-
| Jannar
| Rick Worthy
| Season 3 <small>(ENT)</small>
| Civilian
| Xindi Council
| Scientist
| Xindi-Arboreal
|-
| Michael Jonas
| Raphael Sbarge
| Season 2 <small>(VOY)</small>
| Crewman <small>(provisional)</small>
| USS Voyager
| Engineering officer <br />Maquis <small>(previous)</small>
| Human
|-
| Agnes Jurati
| Alison Pill
| Seasons 1-2 <small>(PIC)</small>
| Civilian
| Daystrom Institute
| Cyberneticist
| Human
|- id="K"
| K'Ehleyr
| Suzie Plakson
| Seasons 2, 4 <small>(TNG)</small>
| Ambassador
| Earth resident
| Federation Ambassador
| Klingon/Human
|-
| Kes
| Jennifer Lien
| Seasons 1–4, 6 <small>(VOY)</small>
| Civilian
| USS Voyager
| Medic<br />Aeroponics
| Ocampa
|-
| Harry Kim
| Garrett Wang
| Seasons 1–7 <small>(VOY)</small>
| Ensign
| USS Voyager
| Chief operations officer
| Human
|-
| Kira Nerys
| Nana Visitor
| Seasons 1–7 <small>(DS9)</small>
| Colonel <small>(S7)</small> <br />Commander <small>(S7)</small> <br />Major <small>(S1-6)</small>
| Deep Space 9
| Commanding officer <small>(S7)</small> <br /> First officer <small>(S1-7)</small>
| Bajoran
|-
|George Kirk
|Chris Hemsworth
|ST09
|Captain
|USS Kelvin (ST09)
|Commanding officer
|Human
|-
| rowspan="2" | George Samuel "Sam" Kirk Jr.
| William Shatner
| rowspan="2" | Season 1<small>(TOS)(Operation -- Annihilate!)</small><br /
>Seasons 1–3 <small>(SNW)</small>
| rowspan="2" | Lieutenant, JG
| rowspan="2" | <br /> Deneva, <br/>USS Enterprise
| rowspan="2" | Xenoanthropologist, research biologist
| rowspan="2" | Human
|-
| Dan Jeannotte
|-
| rowspan="3" | James T. Kirk
| William Shatner
| rowspan="3" | Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC, GEN, ST09, STID, STB)</small> <br />Season 5 <small>(DS9)</small> Seasons 1-3 <small>(SNW)</small>
| rowspan="3" | Captain <small>(TOS, TAS, TFF, TUC, GEN, STID, STB)</Small> <br />Rear Admiral <small>(TMP, WOK, SFS, TVH)</small> <br />Cadet <small>(ST09)</small>Lieutenant <small>(SNW)</small>
| rowspan="3" |USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Enterprise <small>(TOS, TAS, TMP, WOK, SFS, ST09, STID, STB, SNW)</small><br />USS Farragut <small>(SNW)</small>
| rowspan="3" | Commanding officer <small>(TOS, TAS, TMP, WOK, SFS, TVH, TFF, TUC, STID, STB)</Small> <br />First officer <small>(ST09, SNW)</small>
| rowspan="3" | Human
|-
| Chris Pine
|-
|Paul Wesley
|-
| Kol
| Kenneth Mitchell
| Season 1 <small>(DSC)</small>
| General, Klingon Empire
| Klingon High Council
| Council Member
| Klingon
|-
| Kor
| John Colicos
| Season 1 <small>(TOS)</small> <br />Season 1 <small>(TAS)</small> <br />Seasons 2, 4, 7 <small>(DS9)</small>
| Dahar Master <small>(DS9)</small> <br />Commander, Klingon Empire <small>(TOS, TAS)</small>
| Klingon Defense Force <small>(DS9)</small> <br />IKS Klothos <small>(TOS, TAS)</small>
| Defence officer <small>(DS9)</small> <br />Commanding officer <small>(TOS, TAS)</small>
| Klingon
|-
| Kurn
| Tony Todd
| Seasons 3–5 <small>(TNG)</small> <br />Season 4 <small>(DS9)</small>
| Crewman, Bajoran Militia <small>(DS9)</small> <br />Captain, Klingon Empire <small>(TNG)</small>
| Deep Space 9 <small>(DS9)</small> <br />IKS Hegh'ta <small>(TNG)</small>
| Security officer <small>(DS9)</small> <br />Commanding officer <small>(TNG)</small>
| Klingon
|- id="L"
|Alandra La Forge
| Mica Burton
| Season 3 <small>(PIC)</small>
|Ensign
|Fleet Museum
| Engineer
| Human
|-
| Geordi La Forge
| LeVar Burton
| Seasons 1–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br />Season 5 <small>(VOY)</small> <br /> Season 3 <small> (PIC)</small>
| Commodore <small> (S3, PIC)</small> <br/>Lt. Commander <small>(S3-7, movies)</small> <br />Lieutenant <small>(S2)</small> <br />Lieutenant, JG <small>(S1)</small>
| Federation Fleet Museum <small>(S3, PIC)</small> <br />USS Enterprise-E <small>(FCT, INS, NEM)</small> <br />USS Enterprise-D <small>(S1-7, GEN)</small>
| Curator <small>(S3, PIC)</small> <br />Chief engineer <small>(S2-7, movies)</small> <br />Helmsman <small>(S1)</small>
| Human
|-
|Sidney La Forge
| Ashlei Sharpe Chestnut
| Season 3 <small>(PIC)</small>
|<br/>Lieutenant, JG <br/>Ensign
|Enterprise NCC-1701-G <br />USS Titan (NCC-80102-A)
| Helmsman
| Human
|-
| Laris
| Orla Brady
| Seasons 1-2 <small>(PIC)</small>
| Civilian
| Earth resident
| Vineyard Manager
| Romulan
|-
| Leeta
| Chase Masterson
| Seasons 3–7 <small>(DS9)</small>
| Civilian
| Deep Space 9 resident
| Dabo Girl
| Bajoran
|-
| Leland
| Alan van Sprang
| Season 2 <small>(DSC)</small>
| Captain
| NCIA-93 <br />Section 31
| Commanding officer <br />Intelligence Operative
| Human
|-
| Li Nalas
| Richard Beymer
| Season 2 <small>(DS9)</small>
| Navarch
| Deep Space 9
| Liaison officer
| Bajoran
|-
| Linus
| David Benjamin Tomlinson
| Seasons 2–3 <small>(DSC)</small>
| Lieutenant, JG
| USS Discovery
| Science officer
| Saurian
|-
| Gabriel Lorca
| Jason Isaacs
| Season 1 <small>(DSC)</small>
| Captain
| USS Discovery
| Commanding officer
| Human
|-
| Lore
| Brent Spiner
|Season 3 <small> (PIC)</small> <br/>Seasons 1, 4, 6–7 <small>(TNG)</small>
| Civilian
|
|
| Android
|-
| L'Rell
| Mary Chieffo
| Seasons 1–2 <small>(DSC)</small>
| Chancellor
| Klingon High Council
| Chancellor of Klingon Empire
| Klingon
|-
| Lursa
| Barbara March
| Seasons 4–5, 7 <small>(TNG)</small> <br />Movies <small>(GEN)</small> <br /> Season 1 <small>(DS9)</small>
| Captain, Klingon Empire
| Bird of Prey
| Commanding officer
| Klingon
|- id="M"
|Ma’ah
|Jon Curry
|Seasons 2, 4-5<small> (LOW)</small>
|Captain <br/> Helm officer
| Bloodwine delivery ship<br/> IKF Che'Ta
|Captain <br/> Helm officer
|Klingon
|-
| Maihar'du
| Tiny Ron Taylor
| Seasons 1–3, 5–7 <small>(DS9)</small>
| Civilian
| Ferenginar resident
| Attendant to Grand Nagus
| Hupyrian
|-
|Maj'el
|Michaela Dietz
|Season 2 <small> (PRO)</small>
|Ensign
|Command division officer, USS Prodigy<br /> Starfleet Academy fourth year cadet, USS Voyager
|
| Vulcan
|-
| Mallora
| Tucker Smallwood
| Season 3 <small>(ENT)</small>
| Civilian
| Xindi Council
| Chairman
| Xindi-Primate
|-
| rowspan="2" | Carol Marcus
| Bibi Besch
| rowspan="2" | Movies <small>(WOK, SFS, STID)</small>
| rowspan="2" | Civilian <small>(WOK, SFS)</small> <br />Lieutenant <small>(STID)</small>
| rowspan="2" | Project Genesis <small>(WOK, SFS)</small> <br />USS Enterprise <small>(STID)</small>
| rowspan="2" | Biologist
| rowspan="2" | Human
|-
| Alice Eve
|-
| Beckett Mariner
| Tawny Newsome
| Seasons 1-5 <small>(LOW)</small> Season 2 <small> (SNW) (Those Old Scientists)</small>
| Ensign (Seasons 1-3) <br />Lieutenant, JG <small>(Season 4)</small>
| USS Cerritos
|
| Human
|-
| Martok
| J. G. Hertzler
| Seasons 4–7 <small>(DS9)</small>
| Chancellor <small>(S7)</small> <br />General, Klingon Empire <small>(S4-7)</small>
| Deep Space 9<br />IKS Rotarran
| Chancellor of Klingon Empire <small>(S7)</small> <br />Commander of Klingon Forces <small>(S4-7)</small>
| Klingon
|-
| Travis Mayweather
| Anthony Montgomery
| Seasons 1–4 <small>(ENT)</small>
| Ensign
| Enterprise NX-01
| Helmsman
| Human
|-
| rowspan="2" | Joseph M'Benga
| Booker Bradshaw
| rowspan="2" | Seasons 2-3 <small>(TOS)</small>
<br />Seasons 1–3 <small>(SNW)</small>
|rowspan="2"|Commander
| rowspan="2" |USS Enterprise
| rowspan="2" |Doctor <br /> Chief medical officer,
| rowspan="2" |Human
|-
|Babs Olusanmokun
|-
| rowspan="2"|Rukiya M'Benga
| Sage Arrindell
| rowspan="2" |Season 1 <small>(SNW)</small>
| rowspan="2" |Civilian
| rowspan="2" |USS Enterprise
|rowspan="2"|Civilian
|rowspan="2"|Human
|-
| Mukambe Simamba
|-
| rowspan="2" | Leonard McCoy
| DeForest Kelley
| rowspan="2" | Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC, ST09, STID, STB)</small> <br />Season 1 <small>(TNG)</small> <br />Season 5 <small>(DS9)</small>
| rowspan="2" | Admiral <small>(TNG)</small> <br />Commander <small>(TMP, WOK, SFS, TVH, TFF, TUC)</small> <br />Lt. Commander <small>(TOS, TAS, ST09, STID, STB)</small>
| rowspan="2" | USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Enterprise <small>(TOS, TAS, TMP, WOK, SFS, ST09, STID, STB)</small>
| rowspan="2" | Chief medical officer
| rowspan="2" | Human
|-
| Karl Urban
|-
| Mezoti
| Marley S. McClean
| Seasons 6–7 <small>(VOY)</small>
| Civilian
| USS Voyager Passenger
|
| Norcadian
|-
|Migleemo
|Paul F. Tompkins
|Seasons 1-4 <small> (LOW)</small>
|Commander?
|USS Cerritos
|Ship's Counselor
|Klowahkan
|-
| Mila
| Julianna McCarthy
| Seasons 3,7 <small>(DS9)</small>
| Civilian
| Cardassia resident
| Housekeeper
| Cardassian
|-
|Jenna Mitchell
|Rong Fu
|Seasons 1-3, <small>(SNW)</small>
|Lieutenant
|USS Enterprise
|Operations officer
|Human
|-
| Mora Pol
| James Sloyan
| Seasons 2,5 <small>(DS9)</small>
| Civilian
| Bajor resident
| Scientist
| Bajoran
|-
| Morn
| Mark Allen Shepherd
| Seasons 1–7 <small>(DS9)</small> <br />Season 1 <small>(VOY)</small>
| Civilian
| Deep Space 9 resident
| Courier
| Lurian
|-
| Mot
| Ken Thorley
| Seasons 5–6 <small>(TNG)</small>
| Civilian
| USS Enterprise-D
| Barber
| Bolian
|-
| rowspan="2" | Harry Mudd
| Roger C. Carmel
| rowspan="2" | Seasons 1–2 <small>(TOS)</small> <br />Season 1 <small>(TAS)</small> <br />Season 1 <small>(DSC)</small><br>Season 1 <small>(ST)</small>
| rowspan="2" | Civilian
| rowspan="2" |
| rowspan="2" | Smuggler
| rowspan="2" | Human
|-
| Rainn Wilson
|-
|Matthew Arliss Mura
|Joseph Lee
|Season 3 <small> (PIC)</small>
| Lieutenant
|USS Enterprise NCC-1701-G <small>(PIC S3)</small> <br/> USS Titan (NCC-80102-A) <small> (PIC S3)</small>
|Tactical officer
|Bajoran
|-
|Murf
|Dee Bradley Baker
|Season 1 <small> (PRO)</small>
|Ensign <small> (S2)</small><br />Starfleet Academy cadet <small> (S2)</small> <br />Civilian <small> (S1) </small>
|USS Protostar NX-76884
|Civilian/Security officer
|Mellanoid slime worm
|-
| Raffi Musiker
| Michelle Hurd
| Seasons 1-3 <small>(PIC)</small>
| Commander <small>(S2)</small> <br />Civilian <small>(S1)</small>
| Enterprise NCC-1701-G (S3) <br />Starfleet Intelligence <small>(S3)</small> <br /> USS Excelsior <small>(S2)</small>
|First officer <br /> Undercover intelligence agent <br />Chief operations officer <small>(S2)</small>
| Human
|- id="N"
| Narek
| Harry Treadaway
| Season 1 <small>(PIC)</small>
| Zhat Vash Operative
|
|
| Romulan
|-
|Naya
|Victoria Sawal
|Season 5 <small>(DSC)</small>
|Lieutenant
| USS Discovery NCC 1031-A <small> (DSC S5)</small>
|Operations officer
|Human
|-
| Alynna Nechayev
| Natalia Nogulich
| Seasons 6–7 <small>(TNG)</small> <br />Seasons 2–3 <small>(DS9)</small>
| Fleet Admiral
| Starfleet Command
| Admiral of Starfleet
| Human
|-
| Neelix
| Ethan Phillips
| Seasons 1–7 <small>(VOY)</small>
| Ambassador <small>(S7)</small> <br />Civilian <small>(S1-7)</small>
| Talaxian Asteroid Colony <small>(S7)</small> <br />USS Voyager <small>(S1-7)</small>
| Federation Ambassador <small>(S7)</small> <br />Chef <small>(S1-7)</small>
| Talaxian
|-
| | Nhan
| Rachael Ancheril
| Seasons 2-3 <small>(DSC)</small>
| Commander
| USS Discovery <small>(S2-3)</small> <br />USS Enterprise <small>(S2)</small>
| Chief security officer
| Barzan
|-
| Susan Nicoletti
| Christine Delgado
| Seasons 1–4,7 <small>(VOY)</small>
| Lieutenant, JG
| USS Voyager
| Engineering officer
| Human
|-
| Eva Nilsson
| Sara Mitich
| Seasons 2-4 <small>(DSC)</small>
| Lieutenant
|USS Voyager NCC 74656 <small> (DSC S5)</small> <br/>USS Discovery
| Operations officer
| Human
|-
| Nog
| Aron Eisenberg
| Seasons 1–7 <small>(DS9)</small>
| Lieutenant, JG <small>(S7)</small> <br />Ensign <small>(S6-7)</small> <br />Cadet <small>(S4-5)</small> <br />Civilian <small>(S1-4)</small>
| Deep Space 9<br />Starfleet Academy <small>(S4-5)</small>
| Operations officer <small>(S6-7)</small> <br />Starfleet cadet <small>(S4-5)</small> <br />Bar employee <small>(S1-4)</small> <br />Student <small>(S1-4)</small>
| Ferengi
|-
| rowspan="3" |Khan Noonien Singh
|Ricardo Montalbán
| rowspan="3" |Season 1 <small>(TOS)</small><br/>Movies <small>(WOK, STID)</small> <br/><small> (SNW S2)</small>) (Tomorrow and Tomorrow and Tomorrow)
| rowspan="3" |Civilian
| rowspan="3" |SS Botany Bay <small>(TOS)</small>
| rowspan="3" |Superhuman
| rowspan="3" |Human Augment
|-
|Benedict Cumberbatch
|-
|Desmond Sivan (as a child)
|-
|La'an Noonien-Singh
|Christina Chong (primary) <br /> Ava Cheung (as a child)
|Seasons 1-3<small> (SNW)</small>
|Lieutenant
|USS Enterprise
|Chief security officer
|Human
|-
| Noum
| Jason Alexander
|Seasons 1-2 <small> (PRO)</small>
| Lietenant
|USS Voyager-A<br/> USS Dauntless
|Ship’s counselor <br/> Chief medical officer
|Tellarite
|-
| Kashimuro Nozawa
| John Tampoya
| Seasons 1–4,7 <small>(VOY)</small>
| Ensign
| USS Voyager
| Operations officer
| Human
|-
| Keiko O'Brien
| Rosalind Chao
| Seasons 4–6 <small>(TNG)</small> <br />Seasons 1–7 <small>(DS9)</small>
| Civilian
| Deep Space 9 <small>(DS9)</small> <br />USS Enterprise-D <small>(TNG)</small>
| Teacher/Botanist <small>(DS9)</small> <br />Botanist <small>(TNG)</small>
| Human
|-
| Miles O'Brien
| Colm Meaney
| Seasons 1–7 <small>(TNG)</small> <br />Seasons 1–7 <small>(DS9)</small>
| Chief petty officer
| Starfleet Academy <small>(DS9 S7)</small> <br />Deep Space 9 <small>(DS9 S1-7)</small> <br />USS Enterprise-D <small>(TNG S1-6)</small>
| Academy professor <small>(DS9 S7)</small> <br />Chief of operations <small>(DS9 S1-7)</small> <br />Transporter chief <small>(TNG S2-6)</small> <br />Helmsman <small>(TNG S1)</small>
| Human
|-
| Molly O'Brien
| Hana Hatae
| Seasons 1–7 <small>(DS9)</small>
| Civilian
| Deep Space 9 resident
| Student
| Human
|-
| Odo
| René Auberjonois
| Seasons 1–7 <small>(DS9)</small>
| Constable <small>(unofficial)</small>
| Deep Space 9
| Chief of security
| Changeling
|-
| Alyssa Ogawa
| Patti Yasutake
| Seasons 3–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT)</small>
| Lieutenant, JG <small>(S7, movies)</small> <br />Ensign <small>(S3-7)</small>
| USS Enterprise-E <small>(FCT)</small> <br />USS Enterprise-D <small>(S3-7, GEN)</small>
| Nurse
| Human
|-
| Oh
| Tamlyn Tomita
| Season 1 <small>(PIC)</small>
| Commodore
| Starfleet Command
| Head of Starfleet Security
| Vulcan
|-
| Opaka Sulan
| Camille Saviola
| Seasons 1–2,4 <small>(DS9)</small>
| Kai
| Bajor resident
| Bajoran religious leader <small>(S1)</small>
| Bajoran
|-
| Erica Ortegas
| Melissa Navia
| Seasons 1-3 <small> (SNW)</small>
|Lieutenant
|USS Enterprise
|Helm officer
|Human
|-
| Humberto “Beto” Ortegas
| Mynor Pelaez Lüken
| Season 3 <small> (SNW)</small>
|Civilian
|
|Documentary filmmaker
|Human
|-
| Joann Owosekun
| Oyin Oladejo
| Seasons 1–5 <small>(DSC)</small>
| Lieutenant, JG
| USS Discovery
| Operations officer
| Human
|-
|- id="P"
| Owen Paris
| Warren Munson<br />Richard Herd
| Seasons 2,5–7 <small>(VOY)</small>
| Admiral
| Starfleet Command
| Pathfinder Project
| Human
|-
| Tom Paris
| Robert Duncan McNeill
| Seasons 1–7 <small>(VOY)</small> Season 1 <small>(LOW) </small>
| Lieutenant <small> (LOW S1)</small> <br/>Lieutenant, JG <small>(S1-7)</small> <br />Ensign <small>(S5-6)</small>
| USS Voyager
| Helmsman
| Human
|-
| Pelia
| Carol Kane
| Seasons 2-3 <small> (SNW)</small>
| Commander
| USS Enterprise
| Chief engineer
| Lanthanite
|-
| Phlox
| John Billingsley
| Seasons 1–4 <small>(ENT)</small>
| Civilian
| Enterprise NX-01
| Chief medical officer
| Denobulan
|-
|Jean-Luc Picard
| Patrick Stewart
|Seasons 1–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br />Season 1 <small>(DS9)</small> <br />Seasons 1-3 <small>(PIC)</small>
|Admiral <small>(PIC)</small> <br />Captain <small>(TNG, movies)</small>
| Earth resident <small>(PIC)</small> <br />USS Enterprise-E <small>(FCT, INS, NEM)</small> <br />USS Enterprise-D <small>(TNG S1-7, GEN)</small>
|Commanding officer <small>(TNG, movies)</small>
|Human
|-
| Renée Picard
| Penelope Mitchell
| Season 2 <small>(PIC)</small>
| Civilian
| Europa Mission
| NASA Astronaut
| Human
|-
| rowspan="3" | Christopher Pike
| Jeffrey Hunter
| "The Cage" <br /> Season 1<small> (TOS)</small>
| rowspan="3" | Admiral <small>(STID)</small> <br />Captain <small>(TC, TOS, ST09, DSC)</small>
| rowspan="3" | Starfleet Command <small>(STID)</small> <br />USS Enterprise <small>(TC, ST09, DSC)</small>
| rowspan="3" | Starfleet Admiral <small>(STID)</small> <br />Commanding officer <small>(TC, ST09, DSC)</small>
| rowspan="3" | Human
|-
| Bruce Greenwood
|ST09, STID
|-
| Anson Mount
|<br/>Seasons 1-3 <small>(SNW)</small> Season 2 <small>(DSC)</small>
|-
|Jankom Pog
|Jason Mantzoukas
|Seasons 1-2 <small> (PRO)</small>
|Ensign <small> (S2)</small><br />Starfleet Academy cadet <small> (S2) </small><br />Civilian <small> (S1)</small>
|USS Protostar NX-76884
|Engineer
|Tellarite
|-
| Tracy Pollard
| Raven Dauda
| Seasons 1–5 <small>(DSC)</small>
| Lieutenant, JG
| USS Discovery
| Medical officer
| Human
|-
| Katherine Pulaski
| Diana Muldaur
| Season 2 <small>(TNG)</small>
| Commander
| USS Enterprise-D
| Chief medical officer
| Human
|- id="Q"
| Q
| John de Lancie
| Seasons 1–4, 6–7 <small>(TNG)</small> <br />Season 1 <small>(DS9)</small> <br />Seasons 2–3, 7 <small>(VOY)</small> <br />Season 1 <small>(LOW)</small> <br />Season 2 <small>(PIC)</small>
| None
| Q Continuum resident
| Q Continuum
| Q
|-
| Quark
| Armin Shimerman
| Season 7 <small>(TNG)</small> <br />Seasons 1–7 <small>(DS9)</small> <br />Season 1 <small>(VOY)</small>
| Civilian
| Deep Space 9 resident
| Bar Owner
| Ferengi
|- id="R"
|Teresa Ramirez
|Sol Rodriguez
|<small>(PIC S2)</small>
|Civilian
|Earth resident
|Medical doctor associated with the humanitarian organization Mariposas
|Human
|-
|Ricardo Ramirez
|Steve Gutierrez
|<small>(PIC S2)</small>
|Civilian
|Earth resident
|Student
|Human
|-
| Janice Rand
| Grace Lee Whitney
| Season 1 <small>(TOS)</small> <br />Movies <small>(TMP, TVH, TUC)</small> <br />Season 3 <small>(VOY)</small>
| Commander <small>(TUC)</small> <br />Chief petty officer <small>(TVH)</small> <br />Crewman <small>(TMP)</small> <br />Yeoman <small>(TOS)</small>
| USS Excelsior <small>(TUC)</small> <br />Starfleet Command <small>(TVH)</small> <br />USS Enterprise <small>(TOS, TMP)</small>
| First officer <small>(TUC)</small> <br />Starfleet Command officer <small>(TVH)</small> <br />Transporter chief <small>(TMP)</small> <br />Yeoman <small>(TOS)</small>
| Human
|-
|Jack Ransom
|Jerry O'Connell
|Seasons 1-5 <small> (LOW)</small>
|Commander
|USS Cerritos
|First officer
|Human
|-
|Rayner
|Callum Keith Rennie
|Season 5 <small> (DSC)</small>
|Commander <br/> Captain
|USS Discovery NCC-1031-A <br/> USS Antares
|First officer <br/> Commanding officer
|Kellerun
|-
| Rebi
| Cody Wetherill
| Seasons 6–7 <small>(VOY)</small>
| Civilian
| USS Voyager Passenger
|
| Wysanti/xB
|-
| Malcolm Reed
| Dominic Keating
| Seasons 1–4 <small>(ENT)</small>
| Lieutenant
| Enterprise NX-01
| Tactical officer
| Human
|-
|Dal R'El
|Brett Gray
|Seasons 1-2 <small> (PRO)</small>
|Ensign <small> (S2)</small> <br />Starfleet Academy cadet <small> (S2)</small> <br />Civilian <small> (S1)</small>
|USS Protostar NX-76884)
|Acting first officer <small> (S2)</small> <br />Captain <small> (S1)</small>
|Augment (Artificially created hybrid of many species)
|-
| Jet Reno
| Tig Notaro
| Seasons 2-5 <small>(DSC)</small>
| Lt. Commander
| USS Discovery <small>(S2-3)</small> <br />USS Hiawatha <small>(S2)</small>
| Chief Engineer
| Human
|-
| Gen Rhys
| Patrick Kwok-Choon
| Seasons 1-5 <small>(DSC)</small>
| Lieutenant
| USS Discovery
| Tactical officer
| Human
|-
| William Riker
| Jonathan Frakes
|<br/>Seasons 1–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br />Season 2 <small>(VOY)</small><br />Season 4 <small>(ENT)</small><br />Seasons 1,3 <small>(PIC)</small><br />Season 1 <small>(LOW)</small>
|Captain pro tem <small> (PIC S3)</small> <br/>Captain <small>(NEM, PIC, LOW)</small> <br />Commander <small>(TNG S1-7, movies)</small>
|
<br/>USS Titan (NCC-80102-A)<br/>USS Zheng He <small>(PIC S1)</small><br />USS Titan <small>(NEM, LOW S1)</small><br />USS Enterprise-E <small>(FCT, INS, NEM)</small><br />USS Enterprise-D <small>(TNG S1-7, GEN)</small>
| Commanding officer <small>(NEM, PIC S1, LOW S1)</small> <br />First officer <small>(TNG S1-7, movies)</small>
| Human
|-
|Laira Rillak
| Chelah Horsdal
| Seasons 4-5 <small>(DSC)</small>
| Civilian
| None
| President of the United Federation of Planets
| Human/Bajoran/Cardassian
|-
| Cristóbal "Chris" Rios
| Santiago Cabrera
| Seasons 1-2 <small>(PIC)</small>
| Captain <small>(S2)</small> <br />Civilian <small>(S1)</small>
| USS Stargazer <small>(S2)</small> <br /> La Sirena <small>(S1)</small>
| Commanding officer <small>(S2)</small> <br />Civilian Starship Captain <small>(S1)</small>
| Human
|-
| Narissa Rizzo
| Peyton List
| Season 1 <small>(PIC)</small>
| Colonel
|
| Zhat Vash Operative
| Romulan
|-
| Ro Laren
| Michelle Forbes
| Seasons 5–7 <small>(TNG)</small> <br />Season 3 <small>(PIC)</small>
| Commander <small>(PIC)</small> <br />Lieutenant <small>(S7)</small> <br />Ensign <small>(S5-6)</small>
| USS Enterprise-D
| Starfleet Intelligence operative <small>(PIC)</small> <br />Maquis <small>(S7)</small> <br />Helmsman <small>(S5-7)</small>
| Bajoran
|-
|Rok-Takh
|Rylee Alazraqui
|Seasons 1-2 <small> (PRO)</small>
|Ensign <small> (S2) </small><br /> Starfleet Academy cadet <small> (S2)</small> <br />Civilian <small> (S1)</small>
|USS Protostar NX-76884
|Science officer
|Brikar
|-
| Rom
| Max Grodénchik
| Seasons 1–7 <small>(DS9)</small>
| Grand Nagus <small>(S7)</small> <br />Crewman <small>(S4-7)</small> <br />Civilian <small>(S1-4)</small>
| Deep Space 9
| Grand Nagus <small>(S7)</small> <br />Maintenance Engineer <small>(S4-7)</small> <br />Bar employee <small>(1–4)</small>
| Ferengi
|-
| William Ross
| Barry Jenner
| Seasons 6–7 <small>(DS9)</small>
| Vice Admiral
| Deep Space 9
| Military commander
| Human
|-
| Michael Rostov
| Joseph Will
| Seasons 1–2 <small>(ENT)</small>
| Crewman
| Enterprise NX-01
| Engineering officer
| Human
|-
| rowspan="3"| Alexander Rozhenko
| Jon Paul Steuer
| rowspan="3"| Seasons 4–7 <small>(TNG)</small> <br />Season 6 <small>(DS9)</small>
| rowspan="3"| Crewman, Klingon Empire <small>(DS9)</small> <br />Civilian <small>(TNG)</small>
| rowspan="3"| IKS Rotarran <small>(DS9)</small>
| rowspan="3"| Weapons officer <small>(DS9)</small>
| rowspan="3"| Klingon/Human
|-
| Brian Bonsall
|-
| Marc Worden
|-
|Samanthan "Sam" Rutherford
|Eugene Cordero
|Seasons 1-5 <small> (LOW)</small>
|Lieutenant, JG |<br/>Ensign
|USS Cerritos
|Science officer
|Human, cybernetically enhanced
|- id="S"
| rowspan="2" | Saavik
| Kirstie Alley
| rowspan="2" | Movies <small>(WOK, SFS, TVH)</small>
| rowspan="2" | Lieutenant, JG
| rowspan="2" | USS Grissom <small>(SFS, TVH)</small> <br />USS Enterprise <small>(WOK)</small>
| rowspan="2" | Science officer <small>(SFS, TVH)</small> <br />Navigator <small>(WOK)</small>
| rowspan="2" | Vulcan/Romulan
|-
| Robin Curtis
|-
| rowspan="3" | Sarek
| Mark Lenard
| rowspan="3" | Season 2 <small>(TOS)</small> <br />Seasons 1 <small>(TAS)</small> <br />Movies <small>(TMP, SFS, TVH, TUC, ST09)</small> <br />Seasons 3, 5 <small>(TNG)</small> <br />Seasons 1–2 <small>(DSC)</small>
| rowspan="3" | Ambassador
| rowspan="3" | Vulcan resident
| rowspan="3" | Federation Ambassador
| rowspan="3" | Vulcan
|-
| Ben Cross
|-
| James Frain
|-
| Saru
| Doug Jones
| Seasons 1–5 <small>(DSC)</small><br>Season 1 <small>(ST)</small>
| Commander<br />Captain <br /> Federation Ambassador
| Federation Headquarters <small>(DSC S5)</small> USS Discovery <small>(S1-3)</small> <br />USS Shenzhou <small>(S1)</small>
| Federation Ambassador <small> (DSC S5)</small> <br/> First officer <small> (S4-5)</small> <br /> Captain <small>(S3)</small> <br/>First officer <small>(S1-2)</small> <br /> Science officer <small>(S1)</small>
| Kelpien
|-
| Hoshi Sato
| Linda Park
| Seasons 1–4 <small>(ENT)</small>
| Ensign
| Enterprise NX-01
| Communications officer
| Human
|-
| rowspan="3" | Montgomery Scott
| James Doohan
| rowspan="3" | Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC, GEN, ST09, STID, STB)</small> <br />Season 6 <small>(TNG)</small> <br />Season 5 <small>(DS9)</small> <small> Seasons 2-3 (SNW)</small>
| rowspan="3"| Captain <small>(SFS, TVH, TFF, TUC, GEN, TNG)</small> <br />Commander <small>(TMP, WOK)</small> <br />Lt. Commander <small>(TOS, TAS, ST09, STID, STB)</small><br />Lieutenant, Junior Grade <small> (SNW S2)</small>
| rowspan="3"| USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Enterprise <small>(TOS, TAS, TMP, WOK, SFS, ST09, STID, STB)</small> <br /> USS Stardiver
| rowspan="3"| Chief Engineer
| rowspan="3"| Human
|-
| Simon Pegg
|-
| Martin Quinn
|-
| Sela
| Denise Crosby
| Seasons 4–5 <small>(TNG)</small>
| Commander, Romulan Empire
| Unknown
| Romulan officer
| Romulan/Human
|-
| Seska
| Martha Hackett
| Seasons 1–3,7 <small>(VOY)</small>
| None <small>(S1-3)</small> <br />Ensign <small>(provisional)</small> <small>(S1)</small>
| Kazon-Nistrim <small>(S1-3)</small> <br />USS Voyager <small>(S1)</small>
| Kazon Affiliate <small>(S1-3)</small> <br /> Engineering officer <small>(S1)</small> <br />Science officer <small>(S1)</small> <br /> Maquis Infiltrator <small>(previous)</small>
| Cardassian
|-
| Seven of Nine
| Jeri Ryan
|<br /> Seasons 1-3 <small>(PIC)</small> <br />Seasons 4–7 <small>(VOY)</small>
|Captain <small> (PIC S3)</small> Commander <small> (PIC S3)</small> <br />Civilian <small>(PIC S1-2)</small> <br /> <small>(VOY S4-7)</small>
| Enterprise NCC-1701-G <small>(PIC S3)</small> <br />USS Titan (NCC-80102-A) <small> (PIC S3)</small> <br /> La Sirena <small>(PIC S2)</small> <br />USS Voyager <small>(VOY S4-7)</small>
| Captain<br/> <small> (PIC S3) </small> <br />First officer <br /> <small> (PIC S3) </small> <br />Vigilante <small>(PIC S1-2)</small> <br />Astrometrics <small>(VOY S4-7)</small>|<br/>
| Human/xB
|-
| Shakaar Edon
| Duncan Regehr
| Seasons 3–5 <small>(DS9)</small>
| First Minister
| Bajor resident
| First Minister of Bajor
| Bajoran
|-
|Liam Shaw
|Todd Stashwick
|Season 3 <small> (PIC)</small>
| Captain
|USS Titan (NCC-80102-A) <small> (PIC S3)</small>
|Commanding officer
|Human
|-
|Shaxs
|Fred Tatasciore
|Seasons 1-4 <small> (LOW)</small>
|Lieutenant
|USS Cerritos
|Chief security officer
|Bajoran
|-
| Thy'lek Shran
| Jeffrey Combs
| Seasons 1–4 <small>(ENT)</small>
| General
| Kumari
| Andorian Imperial Guard
| Andorian
|-
|Jennifer Sh'reyan
|Lauren Lapkus
|Seasons 1-4 <small> (LOW)</small>
|Ensign
|USS Cerritos
|Counselor
|Andorian
|-
| Silik
| John Fleck
| Seasons 1–4 <small>(ENT)</small>
| Senior official
| Suliban Cabal
| Terrorist
| Suliban
|-
| Benjamin Sisko
| Avery Brooks
| Seasons 1–7 <small>(DS9)</small>
| Captain <small>(S3-7)</small> <br />Commander <small>(S1-3)</small>
| Deep Space 9
| Commanding officer
| Human
|-
| Jake Sisko
| Cirroc Lofton
| Seasons 1–7 <small>(DS9)</small>
| Civilian
| Deep Space 9 resident
| Journalist <small>(S5-7)</small> <br />Student <small>(S1-5)</small>
| Human
|-
| Jennifer Sisko
| Felecia M. Bell
| Seasons 1,3–4 <small>(DS9)</small>
| Lieutenant <small>(S1)</small>
| USS Saratoga <small>(S1)</small>
| Starfleet officer <small>(S1)</small>
| Human
|-
| Joseph Sisko
| Brock Peters
| Seasons 4,6–7 <small>(DS9)</small>
| Civilian
| Earth resident
| Restaurant Owner
| Human
|-
| Sarah Sisko
| Deborah Lacey
| Season 7 <small>(DS9)</small>
| Civilian
| Earth resident
| Holophotographer
| Human
|-
| Luther Sloan
| William Sadler
| Seasons 6–7 <small>(DS9)</small>
| None
| Section 31
| Intelligence Operative
| Human
|-
|Kore Soong
|Isa Briones
|Season 2 <small>(PIC)</small>
|Civilian
|Resident of Earth
|Traveler
|Human
|-
| Soval
| Gary Graham
| Seasons 1–4 <small>(ENT)</small>
| Ambassador
| Earth
| Vulcan Ambassador to Earth
| Vulcan
|-
| rowspan="3" | Spock
| Leonard Nimoy
| rowspan="3" | "The Cage" <br />Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC, ST09, STID, STB)</small> <br />Season 5 <small>(TNG)</small> <br />Season 5 <small>(DS9)</small> <br />Season 2 <small>(DSC)</small> <br />Season 1<small> (SNW)</small>
| rowspan="3" | Ambassador <small>(TNG, ST09, STID)</small> <br />Captain <small>(WOK, SFS, TVH)</small> <br />Commander <small>(TC, TOS, TAS, TMP, ST09, STID, STB, DSC)</small>
| rowspan="3" | New Vulcan resident <small>(STID)</small> <br />USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Enterprise <small>(TC, TOS, TAS, TMP, ST09, STID, STB, DSC)</small> <br />Instructor <small>(ST09)</small>
| rowspan="3" | Federation Ambassador <small>(TNG, ST09, STID)</small> <br />First officer <small>(TC, TOS, TAS, movies)</small> <br />Science officer <small>(TC, TOS, TAS, ST09, STID, STB, DSC)</small>
| rowspan="3" | Vulcan/Human
|-
| Zachary Quinto
|-
| Ethan Peck
|-
| Paul Stamets
| Anthony Rapp
| Season 1-5 <small>(DSC)</small>
| Commander <br/>Lt. Commander <small>(S2)</small> <br />Lieutenant <small>(S1)</small>
| USS Discovery
| Science officer
| Human
|-
| Lon Suder
| Brad Dourif
| Seasons 2–3 <small>(VOY)</small>
| Crewman <small>(provisional)</small>
| USS Voyager
| Engineering officer <br />Maquis <small>(previous)</small>
| Betazoid
|-
| rowspan="2" | Hikaru Sulu
| George Takei
| rowspan="2" | Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC, ST09, STID, STB)</small> <br />Season 3 <small>(VOY)</small>
| rowspan="2" | Captain <small>(TUC)</small> <br />Commander <small>(WOK, SFS, TVH, TFF)</small> <br />Lt. Commander <small>(TMP)</small> <br />Lieutenant <small>(TOS, TAS, ST09, STID, STB)</small>
| rowspan="2" | USS Excelsior <small>(TUC)</small> <br />USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Enterprise <small>(TOS, TAS, TMP, WOK, SFS, ST09, STID, STB)</small>
| rowspan="2" | Commanding officer <small>(TUC)</small> <br /> Helmsman <small>(TOS, TAS, TMP, WOK, SFS, TVH, TFF, ST09, STID, STB)</small>
| rowspan="2" | Human
|-
| John Cho
|- id="T"
| Enabran Tain
| Paul Dooley
| Seasons 2–3,5 <small>(DS9)</small>
| None
| Cardassia resident
| Leader of Obsidian Order
| Cardassian
|-
|Adira Tal
| Blu del Barrio
| Seasons 3-5 <small>(DSC)</small>
| Ensign
| USS Discovery <small> (S3-5)</small>
| Science officer <small> (DSC S3-5)</small>
| Human
|-
|Gray Tal
| Ian Alexander
| Seasons 3-5 <small>(DSC)</small>
| Civilian
| Trill <small>(DSC S4-5)</small> <br/>USS Discovery <small> (S3-4)</small>
|Guardian <small> (DSC S5)</small> Civilian <small> (DSC S3-4)</small>
| Trill
|-
|T'Ana
|Gillian Vigman
|Seasons 1-5 <small> (LOW)</small>
|Commander
|USS Cerritos
|Chief medical officer
|Caitian
|-
|D'Erika Tendi
|Ariel Winter
|Seasons 4-5 <small>(LOW)</small>
|Civilian
|Orion
|Head of House Tendi
|Orion
|-
|D'Vana Tendi
|Noël Wells
|Seasons 1-5 <small> (LOW)</small>
|Lieutenant, JG |<br/>Ensign
|USS Cerritos
|Science officer
|Orion
|-
| Sylvia Tilly
| Mary Wiseman
| Season 1–5 <small>(DSC)</small> <br/>Season 1 <small>(ST)</small>
|Lieutenant, JG <small> (S3-5)</small> <br/>Ensign <small>(S2)</small> <br /> Cadet <small>(S1)</small>
|Starfleet Academy <small>(S4-5)</small> <br/>USS Discovery <small> (S1-4)</small>
|<br/> Instructor <br/> <small> (S4-5)</small> <br/>Acting first officer <small> (S3)</small> <br/> Engineering officer <small>(S2)</small> <br /> Starfleet cadet <small>(S1)</small>
| Human
|-
|T'Lyn
|Gabrielle Ruiz
|Seasons 2-5 <small> (LOW)</small>
|Lieutenant, JG
|USS Cerritos <br/> VCF Sh'vhal
|Science officer
|Vulcan
|-
| Tomalak
| Andreas Katsulas
| Seasons 3–4,7 <small>(TNG)</small>
| Commander, Romulan Empire
| IRW Terix
| Commanding officer
| Romulan
|-
| rowspan="2" | Tora Ziyal
| Melanie Smith
| rowspan="2" | Seasons 4–6 <small>(DS9)</small>
| rowspan="2" | Civilian
| rowspan="2" | Deep Space 9 resident
| rowspan="2" | Artist
| rowspan="2" | Bajoran/Cardassian
|-
| Cyia Batten
|-
| B'Elanna Torres
| Roxann Dawson
| Seasons 1–7 <small>(VOY)</small>
| Lieutenant, JG <small>(provisional)</small>
| USS Voyager
| Chief Engineer <small>(S1-7)</small> <br />Maquis <small>(S1)</small>
| Klingon/Human
|-
| rowspan="2"| T'Pau
|Celia Lovsky
| rowspan="2"|Season 2<small> (TOS)</small> (Amok Time) <br/> <small> (ENT S4)</small>
| rowspan="2"|Civilian
| rowspan="2"|None
| rowspan="2"|Civilian
| rowspan="2"|Vulcan
|-
|Kara Zediker
|-
| T'Pol
| Jolene Blalock
| Seasons 1–4 <small>(ENT)</small>
| Commander <small>(S4)</small> <br />SubCommander <small>(S1-4)</small>
| Enterprise NX-01
| First officer <br />Science officer
| Vulcan
|-
|rowspan="2"|T'Pring
|Arlene Martel
|rowspan="2"|Season 2 <small> (TOS) (Amok Time)</small> <br/> <small> (SNW S1-2)</small>
|rowspan="2"|Civilian
|rowspan="2"|None
|rowspan="2"|Civilian
|rowspan="2"|Vulcan
|-
|Gia Sandhu
|-
| The Traveler
| Eric Menyuk
| Seasons 1,4,7 <small>(TNG)</small>
| Civilian
| Tau Alpha C resident
|
| Unknown
|-
|T'Rina
| Tara Rosling
| Seasons 3-5 <small>(DSC)</small>
| Civilian
| Ni'Var
| President of Ni'Var
| Vulcan
|-
| Deanna Troi
| Marina Sirtis
| Seasons 1–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br />Seasons 6–7 <small>(VOY)</small> <br />Season 4 <small>(ENT)</small> <br />Seasons 1,3 <small>(PIC)</small><br/>Season 1 <small>(LOW)</small>
| Commander <small>(TNG S7, VOY, movies)</small> <br />Lt. Commander <small>(TNG S1-7)</small>
| USS Titan <small>(NEM)</small> <br /> USS Enterprise-E <small>(FCT, INS, NEM)</small> <br />USS Enterprise-D <small>(TNG S1-7, GEN)</small>
| Diplomatic officer <small>(NEM)</small> <br />Counselor <small>(TNG S1-7, movies)</small>
| Betazoid/Human
|-
| Lwaxana Troi
| Majel Barrett
| Seasons 1–5,7 <small>(TNG)</small> <br />Seasons 1,3–4 <small>(DS9)</small>
| Ambassador
| Betazed resident
| Federation Ambassador
| Betazoid
|-
|Kestra Troi-Riker
|Lulu Wilson
|Season 1 <small>(PIC S1)</small> Nepenthe
|Civilian
|Nepenthe resident
|Student
|Human/Betazoid
|-
| Trip Tucker
| Connor Trinneer
| Seasons 1–4 <small>(ENT)</small>
| Commander
| Enterprise NX-01
| Chief Engineer
| Human
|-
| Tuvok
| Tim Russ
| Seasons 1–7 <small>(VOY)</small> <br/> Season 3 <small>(LD)</small> (Grounded) <br/> Season 3 <small>(PIC)</small>
| Captain <small> (PIC S3)</small> <br/> Commander <small> (LD S3)</small> <br/>Lt. Commander <small>(S4-7)</small> <br />Lieutenant <small>(S1-4)</small>
| Starfleet Command <small> (PIC S3)</small><br/>USS Voyager <small>(VOY S1-7)</small>
| Chief of Security
| Vulcan
|-
| Ash Tyler/<wbr/>Voq
| Shazad Latif
| Seasons 1–2 <small>(DSC)</small>
| Lieutenant <small>(S1)</small>
| USS Discovery
| Chief security officer <small>(S1)</small>
| Human/Klingon
|-
|T'Veen
|Stephanie Czajkowski
|Season 3 <small> (PIC)</small>
| Lieutenant
|USS Titan (NCC-80102-A) <small> (PIC S3)</small>
|Science officer
|Vulcan/Deltan
|-
| José Tyler
| Peter Duryea
| "The Cage"
| Lieutenant
| USS Enterprise
| Helmsman
| Human
|-
| Tysess
| Daveed Diggs
|Seasons 1-2 <small> (PRO)</small>
| Commander
|USS Voyager-A<br/> USS Dauntless
|Executive officer
|Andorian
|-
|- id="U"
| rowspan="3" | Nyota Uhura
| Nichelle Nichols
| Seasons 1–3 <small>(TOS)</small> <br />Seasons 1–2 <small>(TAS)</small> <br />Movies <small>(TMP, WOK, SFS, TVH, TFF, TUC)</small> <br />Season 5 <small>(DS9)</small>
| rowspan="3" | Commander <small>(WOK, SFS, TVH, TFF, TUC)</small> <br />Lt. Commander <small>(TMP)</small> <br />Lieutenant <small>(TOS, TAS, ST09, STID, STB)</small>
| rowspan="3" | USS Enterprise-A <small>(TVH, TFF, TUC)</small> <br />USS Enterprise <small>(TOS, TAS, TMP, WOK, SFS, ST09, STID, STB)</small>
| rowspan="3" | Communications officer
| rowspan="3" | Human
|-
| Zoe Saldaña
|ST09, STID, STB
|-
|Celia Rose Gooding
|SNW Seasons 1-3
|- id="V"
|Charles Vance
| Oded Fehr
| Seasons 3-5 <small>(DSC)</small>
| Fleet Admiral <small> (PIC S3-5)</small>
| Starfleet Command
| Commander-in-chief of Starfleet <small> (DSC S3-5)</small>
| Human
|-
| Vash
| Jennifer Hetrick
| Seasons 3–4 <small>(TNG)</small> <br />Season 1 <small>(DS9)</small>
| Civilian
| Earth resident
| Archeologist
| Human
|-
| Vorik
| Alexander Enberg
| Seasons 3–5, 7 <small>(VOY)</small>
| Ensign
| USS Voyager
| Engineering officer
| Vulcan
|- id="W"
| Weyoun
| Jeffrey Combs
| Seasons 4–7 <small>(DS9)</small>
| None
| Cardassia Prime
| Dominion Leader
| Vorta
|-
| Naomi Wildman
| Scarlett Pomers
| Seasons 2–7 <small>(VOY)</small>
| Civilian
| USS Voyager resident
| Captain's Assistant <small>(unofficial)</small>
| Ktarian/Human
|-
| Samantha Wildman
| Nancy Hower
| Seasons 2–6 <small>(VOY)</small>
| Ensign
| USS Voyager
| Science officer
| Human
|-
| Winn Adami
| Louise Fletcher
| Seasons 1–3, 5–7 <small>(DS9)</small>
| Kai <small>(S3-7)</small> <br />Vedek <small>(S1-2)</small>
| Bajor resident
| Bajoran religious leader
| Bajoran
|-
| Worf
| Michael Dorn
| Seasons 1–7 <small>(TNG)</small> <br />Movies <small>(GEN, FCT, INS, NEM)</small> <br />Seasons 4–7 <small>(DS9)</small> <br />Season 3 <small>(PIC)</small>
| Lt. Commander <small>(DS9, movies)</small> <br />Ambassador <small>(DS9 S7)</small> <br />Lieutenant <small>(TNG S3-7)</small> <br />Lieutenant, JG <small>(TNG S1-2)</small>
|<br/> Starfleet Intelligence <small> (PIC S3)</small> <br/>USS Enterprise-E <small>(NEM)</small> <br />Qo'noS <small>(DS9 S7)</small> <br />Deep Space 9 <small>(DS9 S4-7)</small> <br />USS Enterprise-D <small>(S1-7, GEN)</small>
| Intelligence operative <small> (PIC S3)</small> <br/>Strategic operations officer <small>(DS9 S4-7, movies)</small> <br />Ambassador <small>(DS9 S7)</small> <br />Chief security officer <small>(TNG S2-7)</small> <br />Helmsman <small>(TNG S1)</small>
| Klingon
|- id="Y"
| Tasha Yar
| Denise Crosby
| Seasons 1,3,7 <small>(TNG)</small>
| Lieutenant
| USS Enterprise-D
| Chief security officer
| Human
|-
| Kasidy Yates
| Penny Johnson Jerald
| Seasons 3–7 <small>(DS9)</small>
| Captain
| SS Xhosa<br />Deep Space 9 resident
| Freighter Captain
| Human
|- id="Z"
| Zek
| Wallace Shawn
| Seasons 1–3,5–7 <small>(DS9)</small>
| Grand Nagus
| Ferenginar resident
| Leader of Ferengi economics
| Ferengi
|-
|Zero
|Angus Imrie
|Seasons 1-2<small> (PRO)</small>
|Ensign <small> (S2)</small> <br /> Starfleet Academy cadet <small> (S2) </small> <br /> Civilian <small> (S1) </small>
|USS Protostar NX-76884
|Science officer
|Medusan
|-
| Zhaban
| Jamie McShane
| Season 1 <small>(PIC)</small>
| Civilian
| Earth resident
| Butler
| Romulan
|-
|Zora
|Annabelle Wallis
|Seasons 3-5 <small>(DISC)</small><br>Season 1 <small>(ST)</small>
|
| USS Discovery
|Specialist
|Artificial intelligence
|}
Appearances
Star Trek: The Original Series
Star Trek: The Next Generation
Star Trek: Deep Space Nine
Star Trek: Voyager
Star Trek: Enterprise
Star Trek: Discovery
Star Trek: Picard
Star Trek: Lower Decks
Star Trek: Prodigy
Star Trek: Strange New Worlds
Shared cast
Star Trek has an ongoing tradition of actors returning to reprise their roles in other spin-off series. In some instances, actors have portrayed potential ancestors, descendants, or relatives of characters they originated. Characters have also been recast for later appearances.
<!-- Use for in-line notes within this section -->
<!-- Limit to portrayals of characters (including familial relations) in more than one series, or recurring appearances by an actor who is also a main cast member of any other series. -->
{| class="wikitable sticky-header" style="font-size: 90%; text-align: center; min-width: 100%"
|-
! Actor(s)
! Character
! |The Original Series
! |The Animated Series
! |The Next Generation
! |Deep Space Nine
! |Voyager
! |Enterprise
! |Discovery
! |Short Treks
! |Picard
! |Lower Decks
! |Prodigy
! |Strange New Worlds
! |Very Short Treks
!Starfleet Academy
|-
|William Shatner
| rowspan="2" |James T. Kirk
| colspan="2"
|
|
|
|
|
|
| colspan="6"
|-
|Paul Wesley
| colspan="11"
|
| colspan="2"
|-
|Jeffrey Hunter
| rowspan="3" |Christopher Pike
|
| colspan="5"
|
| colspan="7"
|-
|Sean Kenney
|
| colspan="13"
|-
|Anson Mount
| colspan="6"
|
|
| colspan="4"
|
|
|-
|Leonard Nimoy
| rowspan="2" |Spock
| colspan="2"
|
|
| colspan="2"
|
| colspan="3"
|
| colspan="3"
|-
|Ethan Peck
|colspan="6"
|
|
| colspan="3"
|
|
|
|-
|DeForest Kelley
|Leonard McCoy
| colspan="2"
|
|
| colspan="10"
|-
|James Doohan
| rowspan="3" |Scotty
| colspan="2"
|
|
| colspan="6"
|
| colspan="3"
|-
|Carlos Alazraqui
|colspan="12"
|
|
|-
|Martin Quinn
|colspan="11"
|
| colspan="2"
|-
|Nichelle Nichols
| rowspan="2" |Uhura
| colspan="2"
|
|
| colspan="6"
|
| colspan="3"
|-
|Celia Rose Gooding
| colspan="11"
|
|
|
|-
|George Takei
|Hikaru Sulu
| colspan="2"
| colspan="2"
|
| colspan="2"
|
|
|
| colspan="2"
|
|
|-
|Walter Koenig
|Pavel Chekov
|
| colspan="2"
|
| colspan="4"
|
| colspan="5"
|-
|Jess Bush
| rowspan="2" |Christine Chapel
| colspan="11"
|
| colspan="2"
|-
| rowspan="4" |Majel Barrett
| colspan="2"
| colspan="12"
|-
|Computer Voice
| colspan="6"
| colspan="2"
|
| colspan="5"
|-
|Lwaxana Troi
| colspan="2"
| colspan="2"
| colspan="10"
|-
| rowspan="2" |Una "Number One" Chin-Riley
|
| colspan="5"
|
| colspan="7"
|-
|Rebecca Romijn
| colspan="6"
|
|
| colspan="3"
|
| colspan="2"
|-
|Grace Lee Whitney
|Janice Rand
|
| colspan="3"
|
| colspan=9
|-
|Roger C. Carmel
| rowspan="2" |Harry Mudd
|
|
| colspan="12"
|-
|Rainn Wilson
| colspan="6"
|
|
| colspan="6"
|-
|Patrick Stewart
|Jean-Luc Picard
| colspan="2"
|
|
|
|
|
|
|
| colspan="5"
|-
|Jonathan Frakes
|William Riker
| colspan="2"
|
| colspan="3"
| colspan="2"
|
|
| colspan="2"
|
|
|-
|LeVar Burton
|Geordi La Forge
| colspan="2"
|
|
|
| colspan="3"
|
| colspan="5"
|-
|Michael Dorn
|Worf
| colspan="2"
| colspan="2"
| colspan="4"
|
| colspan="5"
|-
|Gates McFadden
|Beverly Crusher
| colspan="2"
|
| colspan="5"
|
|
|
|
|
|
|-
|Marina Sirtis
|Deanna Troi
| colspan="2"
|
|
| colspan="2"
| colspan="2"
|
|
| colspan="4"
|-
| rowspan="4" |Brent Spiner
|Data
| colspan="2"
|
| colspan="2"
|
| colspan="2"
|
|
| colspan="4"
|-
|Arik Soong
| colspan="5"
|
| colspan="8"
|-
|Altan Inigo Soong
| colspan="8"
|
| colspan="5"
|-
| Adam Soong
| colspan="8"
|
| colspan="5"
|-
|Wil Wheaton
|Wesley Crusher
| colspan="2"
|
| colspan="5"
| colspan="2"
|
| colspan="3"
|-
| rowspan="3" |Diana Muldaur
|Katherine Pulaski
| colspan="2"
|
| colspan="11"
|-
|Ann Mulhall
|
| colspan="13"
|-
|Miranda Jones
|
| colspan="13"
|-
|John de Lancie
|Q
| colspan="2"
|
|
|
| colspan="3"
|
|
|
|
|colspan="2"
|-
|Whoopi Goldberg
| rowspan="2" |Guinan
| colspan="2"
|
| colspan="5"
|
| colspan="5"
|-
|Ito Aghayere
| colspan="8"
|
|colspan="5"
|-
|Dwight Schultz
|Reginald Barclay
| colspan="2"
|
|
|
| colspan="9"
|-
|Jon Paul Steuer
| rowspan="4" |Alexander Rozhenko
| colspan="2"
|
| colspan="11"
|-
|Brian Bonsall
| colspan="2"
|
| colspan="11"
|-
|James Sloyan
| colspan="2"
|
| colspan="11"
|-
|Marc Worden
| colspan="3"
|
| colspan="10"
|-
|Jonathan Del Arco
|Hugh
| colspan="2"
|
| colspan="5"
|
| colspan="5"
|-
| rowspan="2" |Michelle Forbes
| Dara
| colspan="2"
|
| colspan="11"
|-
| Ro Laren
| colspan="2"
|
| colspan="5"
|
| colspan="5"
|-
| Alice Krige
| rowspan="3" |Borg Queen
| colspan="4"
|
| colspan="3"
| colspan="2"
| colspan="4"
|-
| Susanna Thompson
| colspan="4"
|
| colspan="9"
|-
| Annie Wersching
| colspan="8"
|
| colspan="5"
|-
|Avery Brooks
|Benjamin Sisko
| colspan="3"
|
| colspan="9"
|
|-
|René Auberjonois
|Odo
| colspan="3"
|
| colspan="6"
|
| colspan="3"
|-
|Cirroc Lofton
|Jake Sisko
| colspan="3"
|
| colspan="9"
|
|-
|Colm Meaney
|Miles O'Brien
| colspan="2"
|
|
| colspan="10"
|-
|Armin Shimerman
|Quark
| colspan="2"
|
|
|
| colspan="4"
|
| colspan="2"
|
|
|-
|Alexander Siddig
|Julian Bashir
| colspan="2"
|
|
| colspan="5"
|
| colspan="4"
|-
|Nana Visitor
|Kira Nerys
| colspan="3"
|
| colspan="5"
|
| colspan="4"
|-
|Rosalind Chao
|Keiko O'Brien
| colspan="2"
| colspan=2
| colspan="10"
|-
|Andrew Robinson
|Elim Garak
| colspan="3"
|
| colspan="5"
|
| colspan="4"
|-
|Kate Mulgrew
|Kathryn Janeway
| colspan="4"
|
| colspan="5"
|
| colspan="3"
|-
|Robert Beltran
|Chakotay
| colspan="4"
|
| colspan="5"
|
| colspan="3"
|-
|Robert Duncan McNeill
|Tom Paris
| colspan="4"
|
| colspan="4"
|
| colspan="4"
|-
|Ethan Phillips
|Neelix
| colspan="4"
|
| colspan="7"
|
|
|-
|Robert Picardo
|The Doctor
| colspan="3"
|
|
| colspan="5"
|
| colspan="2"
|
|-
|Tim Russ
|Tuvok
| colspan="3"
|
|
| colspan="3"
|
| colspan="5"
|-
|Jeri Ryan
|Seven of Nine
| colspan="4"
|
| colspan="3"
|
| colspan="5"
|-
|Garrett Wang
|Harry Kim
| colspan="4"
|
| colspan="4"
|
| colspan="4"
|-
|Manu Intiraymi
| rowspan="3" |Icheb
| colspan="4"
|
| colspan="9"
|-
|Mark Bennington
| colspan="4"
|
| colspan="9"
|-
|Casey King
| colspan="8"
|
| colspan="5"
|-
|Jolene Blalock
|T'Pol
| colspan="5"
|
| colspan="3"
|
| colspan="4"
|-
|Connor Trinneer
|Trip Tucker
| colspan="5"
|
| colspan="6"
|
|
|-
|Sonequa Martin-Green
| rowspan="2" |Michael Burnham
| colspan="6"
|
| colspan="7"
|-
|Kyrie Mcalpin
| colspan="7"
|
| colspan="6"
|-
|Doug Jones
|Saru
| colspan="6"
|
|
| colspan="4"
|
|
|-
|Mary Wiseman
|Sylvia Tilly
| colspan="6"
|
|
| colspan="5"
|
|-
| Mark Lenard
| rowspan="2" | Sarek
| colspan="3"
| colspan="11"
|-
| James Frain
| colspan="6"
|
| colspan="7"
|-
| Jane Wyatt
| rowspan="3" | Amanda Grayson
|
| colspan="13"
|-
| Majel Barrett
|
|
| colspan="12"
|-
| Mia Kirshner
| colspan="6"
|
| colspan="4"
|
| colspan="2"
|-
| rowspan="2" |Tawny Newsome
|Beckett Mariner
| colspan="9"
|
| colspan="1"
|
| colspan="2"
|-
|Illa Dax
| colspan="13"
|
|-
|Jack Quaid
|Brad Boimler
| colspan="9"
|
| colspan="1"
|
| colspan="2"
|-
|Noël Wells
|D'Vana Tendi
| colspan="9"
|
| colspan="1"
| colspan="2"
|
|-
|Eugene Cordero
|Sam Rutherford
| colspan="9"
|
| colspan="1"
|
| colspan="2"
|-
|Jerry O'Connell
|Jack Ransom
| colspan="9"
|
| colspan="1"
|
| colspan="2"
|-
| Angus Imrie
| Zero
| colspan="10"
|
|
|
|
|-
| Booker Bradshaw
| rowspan="2" | Joseph M'Benga
|
| colspan="13"
|-
| Babs Olusanmokun
| colspan="11"
|
| colspan="2"
|-
| Bruce Horak
| Hemmer
| colspan="11"
|
|
|
|-
| Arlene Martel
| rowspan="2" | T'Pring
|
| colspan="13"
|-
| Gia Sandhu
| colspan="11"
|
|
|
|-
|Oded Fehr
|Charles Vance
| colspan="6"
|
| colspan="6"
|
|-
|Tig Notaro
|Jett Reno
| colspan="6"
|
| colspan="6"
|
|-
| colspan="16" |
|}
See also
- Additional Lists of Star Trek characters in alternate categorization schemes
- List of Star Trek episodes