| Jove | | JOV (English) | Roman Mythology (Anglicized) | |
| Juno | | JOO-no (English) | Roman Mythology | |
| Jupiter | | JOO-pi-tər (English) | Roman Mythology (Anglicized) | |
| Juturna | | - | Roman Mythology | |
| Juventas | | - | Roman Mythology | |
| Lara (2) | | - | Roman Mythology | |
| Larunda | | - | Roman Mythology | |
| Laverna | | - | Roman Mythology | |
| Lavinia | | - | Roman Mythology, Romanian | |
| Liber | | LIE-bər (English) | Roman Mythology | |
| Libitina | | - | Roman Mythology | |
| Lucina | | loo-SEEN-ə (English) | Roman Mythology | |
| Lucretia | | - | Ancient Roman, Roman Mythology | |
| Luna | | - | Roman Mythology | |
| Maia (1) | | MAY-ə (English), MIE-ə (English) | Greek Mythology, Roman Mythology, Portuguese, Georgian | |