This is a list of named geological features on Tethys. Tethyan geological features are named after people and places in Homer's The Iliad and The Odyssey.
Chasmata
There are two named chasmata on Tethys.
{| class="wikitable"
! style="width:10em" | Chasma !! Pronounced !! Coordinates !! Length (km) !! Approval Date !! Named After !! Refs
|-id="Ithaca"
| Ithaca Chasma || || || 1219 || 1982 || Ithaca ||
|-id="Ogygia"
| Ogygia Chasma || || || 120 || 2008 || Ogygia ||
|}
Montes
The central complex of the Odysseus basin is called Scheria Montes.
{| class="wikitable"
! style="width:10em" | Montes !! Pronounced !! Coordinates !! Size, km !! Approval Date !! Named After !! Refs
|-id="Scheria"
| Scheria Montes || || || 1859 || 2008 || Scheria ||
|}
Craters
{| class="wikitable"
! style="width:10em" | Crater !! Pronounced !! Coordinates !! Length (km) !! Approval Date !! Named After !! Refs
|-id="Achilles"
| Achilles || || || 58.4 || 2008 || Achilles ||
|-id="Aietes"
| Aietes || || || 91 || 2008 || Aietes ||
|-id="Ajax"
| Ajax || || || 88 || 1982 || Ajax the Great ||
|-id="Alcinous"
| Alcinous || || || 50 || 2008 || Alcinous ||
|-id="Amphinomus"
| Amphinomus || || || 13.6 || 2008 || Amphinomus ||
|-id="Anticleia"
| Anticleia || || || 100.7 || 1982 || Anticleia ||
|-id="Antinous"
| Antinous || || || 138 || 1982 || Antinous ||
|-id="Arete"
| Arete || || || 13 || 1982 || Arete ||
|-id="Circe"
| Circe || || || 79 || 1982 || Circe ||
|-id="Demodocus"
| Demodocus || || || 125 || 2008 || Demodocus ||
|-id="Diomedes"
| Diomedes || || || 48.57 || 2008 || Diomedes ||
|-id="Dolius"
| Dolius || || || 190 || 2008 || Dolius ||
|-id="Elpenor"
| Elpenor || || || 60 || 1982 || Elpenor ||
|-id="Euanthes"
| Euanthes || || || 33 || 1982 || Euanthes ||
|-id="Eumaeus"
| Eumaeus || || || 30 || 1982 || Eumaeus ||
|-id="Eupithes"
| Eupithes || || || 22.3 || 2008 || Eupithes ||
|-id="Eurycleia"
| Eurycleia || || || 31 || 1982 || Eurycleia ||
|-id="Eurylochus"
| Eurylochus || || || 44.8 || 2008 || Eurylochus ||
|-id="Eurymachus"
| Eurymachus || || || 38.4 || 2008 || Eurymachus ||
|-id="Halius"
| Halius || || || 29.5 || 2008 || Halius ||
|-id="Hermione"
| Hermione || || || 68.2 || 2008 || Hermione ||
|-id="Icarius"
| Icarius || || || 54.4 || 2008 || Icarius ||
|-id="Irus"
| Irus || || || 26.5 || 2008 || Irus ||
|-id="Laertes"
| Laertes || || || 51.13 || 1982 || Laertes ||
|-id="Leocritus"
| Leocritus || || || 12.5 || 2008 || Leocritus ||
|-id="Leucothea"
| Leucothea || || || 13.8 || 2008 || Leucothea ||
|-id="Maron"
| Maron || || || 11.8 || 2008 || Maron ||
|-id="Medon"
| Medon || || || 18.7 || 2008 || Medon ||
|-id="Melanthius"
| Melanthius || || || 250 || 1982 || Melanthius ||
|-id="Mentor"
| Mentor || || || 62 || 1982 || Mentor ||
|-id="Naubolos"
| Naubolos || || || 54.5 || 2008 || Naubolos ||
|-id="Nausicaa"
| Nausicaa || || || 69 || 1982 || Nausicaa ||
|-id="Neleus"
| Neleus || || || 37.6 || 2008 || Neleus ||
|-id="Nestor"
| Nestor || || || 38.2 || 1982 || Nestor ||
|-id="Odysseus
| Odysseus || || || 445 || 1982 || Odysseus ||
|-id="Oenops"
| Oenops || || || 25.7 || 2008 || Oenops ||
|-id="Ormenus'
| Ormenus || || || 39.8 || 2008 || Ormenus ||
|-id="Penelope"
| Penelope || || || 207.5 || 1982 || Penelope ||
|-id="Periboea"
| Periboea || || || 51 || 2008 || Periboea ||
|-id="Phemius"
| Phemius || || || 75.9 || 1982|| Phemius ||
|-id="Philoetius"
| Philoetius || || || 28.3 || 2008 || Philoetius ||
|-id="Polycaste"
| Polycaste || || || 23 || 2008 || Polycaste ||
|-id="Polyphemus"
| Polyphemus || || || 73 || 1982 || Polyphemus ||
|-id="Poseidon"
| Poseidon || || || 63 || 2008 || Poseidon ||
|-id="Rhexenor"
| Rhexenor || || || 38 || 2008 || Rhexenor ||
|-id="Salmoneus"
| Salmoneus || || || 93 || 2008 || Salmoneus ||
|-id="Teiresias"
| Teiresias || || || 14.5 || 1982 || Teiresias ||
|-id="Telemachus"
| Telemachus || || || 92 || 1982 || Telemachus ||
|-id="Telemus"
| Telemus || || || 320 || 2008 || Telemus ||
|-id="Theoclymenus"
| Theoclymenus || || || 34.3 || 2008 || Theoclymenus ||
|}