| Hector | | HEK-tər (English) | English, French, Greek Mythology (Latinized), Arthurian Romance | |
| Hecuba | | - | Greek Mythology (Latinized) | |
| Hephaestus | | hi-FES-təs (English), hi-FEES-təs (English) | Greek Mythology (Latinized) | |
| Heracles | | - | Greek Mythology (Latinized) | |
| Hippolyta | | - | Greek Mythology (Latinized) | |
| Hyacinthus | | - | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Iacchus | | - | Greek Mythology (Latinized) | |
| Iapetus | | - | Greek Mythology (Latinized) | |
| Icarus | | IK-ə-rəs (English) | Greek Mythology (Latinized) | |
| Ilithyia | | - | Greek Mythology (Latinized) | |
| Iphigenia | | - | Greek Mythology (Latinized) | |
| Jocasta | | jo-KAS-tə (English) | Greek Mythology (Latinized) | |
| Laius | | - | Greek Mythology (Latinized) | |
| Larissa | | lə-RIS-ə (English) | English, Portuguese (Brazilian), Greek Mythology (Latinized) | |
| Leander | | lee-AN-dər (English) | Greek Mythology (Latinized) | |