This is a list of all of the visitors to the International Space Station (ISS), including long-term crew, short-term visitors, and space tourists, in alphabetical order. ISS crew names are in bold. The suffix (twice, three times, ...) refers to the individual's number of spaceflights to the ISS, not the total number of spaceflights. Entries without a flag symbol indicate that the individual was an American citizen at launch. Entries without a female symbol (16px) are men.
Statistics
, 250<!--+1, Victor Glover not on NASA's list for some reason--> individuals have made 411 spaceflights to the ISS, including the seven people currently at the ISS (Expedition 74). Two people have made five spaceflights to the ISS, while five people have made four, 36 people made three and 84 people made two. Note that this list assigns individuals with dual citizenship to their country of primary residence at time of launch (for example, the Iranian-American space tourist Anousheh Ansari is only listed under the United States).
Initially all private space travel was aboard the Russian Soyuz spacecraft. When only two crew members are required in the three-seat Soyuz, and additional cargo is not sent, the additional seat is sold to the general public through Space Adventures. Private travelers would remain on the ISS during handover from one expedition crew to the next, generally a week or two. The NASA Space Shuttle carried seven crew members, and the longest docking with the ISS was 11 days. Many visitors to the ISS were accommodated for short periods during NASA shuttle dockings.
NASA stated it was "not interested" in private spaceflight during construction of the ISS, but eventually began allowing up to two flights per year in 2019, with the first private visitors arriving at the US Orbital Segment in 2022 on a SpaceX Crew Dragon.
Long-term ISS crew, by nationality
thumb|300px|right|[[Tracy Caldwell Dyson in the Cupola module of the International Space Station observing Earth]]
{| class="wikitable"
|-
!Nationality
!ISS crew/members
|-
| || 57
|-
| || 46
|-
| || 6
|-
| || 3
|-
| || 3
|-
| || 2
|-
| || 3
|-
| || 1
|-
| || 1
|-
| || 1
|-
| || 1
|-
| || 1
|-
| Total || 120
|}
All visitors, by nationality
{| class="wikitable"
|-
!Nationality
!Flights<!--individuals times flights. The word 'visits' would be good too, per article title, but flights is less ambiguous, as we're also counting visitors currently on board-->
!Individuals<!--individuals-->
!Notes
|-
| || 274 || 158 || 31 women, seven tourists, 56 double<!---an individual cannot have both the 'double' and 'triple' label simultaneously--->, 25 triple<!---an individual cannot have both the 'triple' and 'quadruple' label simultaneously--->, six quadruple and one quintuple flyers
|-
| || 96 || 54 || 2 women, 14 double, eight triple, one quadruple and three quintuple flyers
|-
| || 14 || 9 || one woman, four double and one triple flyer
|-
| || 9 || 8 || one woman, one tourist, two double flyers
|-
| || 9 || 5 || one woman, one double flyer, two triple flyers
|-
| || 4 || 4 || one woman
|-
| || 3 || 3 ||
|-
| || 3 || 2 || one double flyer
|-
| || 2 || 2 ||
|-
| || 2 || 2 ||
|-
| || 2 || 1 || one double flyer
|-
| || 2 || 1 || one double flyer
|-
| || 2 || 1 || one double flyer
|-
| || 3 || 2 || one double flyer
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 || one tourist
|-
| || 1 || 1 || one woman
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 ||
|-
| || 1 || 1 || one woman
|-
| Total || 415 || 252 || 38 women, 9 tourists, 81 double<!---an individual cannot have both the 'double' and 'triple' label simultaneously--->, 33 triple<!---an individual cannot have both the 'triple' and 'quadruple' label simultaneously--->, eight quadruple and three quintuple flyers
|}
All visitors, by agency
{| class="wikitable"
|-
! colspan=2 | Agency
!Flights<!--individuals times flights. The word 'visits' would be good too, per article title, but flights is less ambiguous, as we're also counting visitors currently on board-->
!Individuals<!--individuals-->
!ISS crew
!Notes
|-
| 30px || NASA || 256 || 145 || 56 || 27 women, 56 double<!---an individual cannot have both the 'double' and 'triple' label simultaneously--->, 25 triple<!---an individual cannot have both the 'triple' and 'quadruple' label simultaneously---> and four quadruple flyers
|-
| 30px || Roscosmos || 90 || 51 || 45 || one woman, 14 double, eight triple and three quintuple flyers
|-
| 25px || ESA || 25 || 18 || 16 || two women, four double flyers and two triple flyers
|-
| 30px || JAXA || 12 || 8 || 6 || one woman, two double and one triple flyer
|-
| || CSA || 8 || 6 || 2 || one woman, two double flyers
|-
| || MBRSC || 2 || 2 || 1 ||
|-
| 30px || AEB || 1 || 1 || - ||
|-
| || CNES || 1 || 1 || - || Philippe Perrin later joined ESA
|-
| || HSO || 1 || 1 || - ||
|-
| 30px || ISRO || 1 || 1 || - ||
|-
| || ANGKASA || 1 || 1 || - ||
|-
| || KARI || 1 || 1 || - || one woman
|-
| || KazCosmos || 1 || 1 || - ||
|-
| || TUA || 1 || 1 || - ||
|-
|
|Belarus Space Agency
|1
|1
| -
|one woman
|-
| || Tourists || 8 || 7 || - || one woman, one double flyer
|-
| colspan=2 | Total || 411 || 250 || 118 || 37 women, 80 double<!---an individual cannot have both the 'double' and 'triple' label simultaneously--->, 35 triple<!---an individual cannot have both the 'triple' and 'quadruple' label simultaneously--->, five quadruple and two quintuple flyers
|}
A
- Joe Acaba (three times)
- Viktor Afanasyev
- Aydyn Aimbetov
- Ali AlQarni
- Scott D. Altman
- Clayton C. Anderson (twice)
- Anousheh Ansari 16px|♀ / (tourist)
- Dominic A. Antonelli (twice)
- Lee J. Archambault (twice)
- Jeffrey S. Ashby (twice)
- Nichole Ayers 16px|♀
B
- Rayyanah Barnawi16px|♀
- Kayla Barron16px|♀
- Daniel T. Barry (twice)
- Yuri Baturin
- Robert L. Behnken (three times)
- Michael J. Bloomfield (twice)
- Eric A. Boe (twice)
- Konstantin Borisov
- Stephen G. Bowen (four times)
- Randolph J. Bresnik (twice)
- Nikolai Budarin
- Daniel W. Bursch
C
- Robert D. Cabana
- Charles J. Camarda
- Zena Cardman 16px|♀ (currently onboard)
- Josh A. Cassada
- Christopher J. Cassidy (twice)
- Gregory E. Chamitoff (twice)
- Franklin R. Chang-Diaz /
- Raja Chari
- Leroy Chiao (twice)
- Catherine G. Coleman 16px|♀
- Nikolai Chub
- Eileen M. Collins 16px|♀
- Samantha Cristoforetti 16px|♀ (twice)
- Frank L. Culbertson
- Nancy J. Currie 16px|♀
- Vladimir Dezhurov
- Benjamin A. Drew (twice)
- James P. Dutton
- Jeanette J. Epps<sup>8px|♀</sup>
F
- Andrey Fedyaev
- Andrew J. Feustel /
- Michael Foale /
- Michael J. Foreman (twice)
- Stephen N. Frick (twice)
- Alexander Gerst (twice)
- Alper Gezeravcı
- Yuri Gidzenko (twice)
- Victor Glover
- Linda M. Godwin 16px|♀
- Aleksandr Gorbunov
- Umberto Guidoni
- Nick Hague (twice)
- Claudie Haigneré 16px|♀
- Kenneth Ham (twice)
- José M. Hernández
- Scott J. Horowitz (twice)
- Tibor Kapu
- Janet L. Kavandi 16px|♀
- Nicole Aunapu Mann<sup>8px|♀</sup>
- Jonny Kim
- Robert S. Kimbrough (twice)
- Mikhail Korniyenko (twice)
- Sergey Kud-Sverchkov
- André Kuipers (twice)
- Wendy B. Lawrence 16px|♀
M
- Steve MacLean
- Sandra H. Magnus 16px|♀ (three times)
- Denis Matveev
- Matthias Maurer
- Megan McArthur 16px|♀
- Anne McClain 16px|♀ (twice)
- Pamela A. Melroy 16px|♀ (three times)
- Leland D. Melvin (twice)
N
- Paolo Nespoli (three times)
- Lisa M. Nowak 16px|♀
O
- Ellen L. Ochoa 16px|♀ (twice) (three times)
P
- Gennady Padalka (four times)
- Mark Pathy (tourist)
- Nicholas J.M. Patrick (twice) (twice)
- Kirill Peskov
- Donald R. Pettit (four times)
- Francisco Rubio
- Sergey Ryazansky (twice)
S
- David Saint-Jacques
- Aleksandr Samokutyayev (twice)
- Robert L. Satcher
- Mark Shuttleworth (tourist)
- Aleksandr Skvortsov (three times)
- Steven L. Smith
- Nicole P. Stott 16px|♀ (twice)
- Valery Tokarev (twice)
- Walter Villadei
- Carl E. Walz
- Marcus Wandt /
- Jessica Watkins 16px|♀
- Mary E. Weber 16px|♀
- Peter J. K. Wisoff