| Lachesis | | - | Greek Mythology | |
| Laios | | - | Greek Mythology | |
| Laius | | - | Greek Mythology (Latinized) | |
| Lamia (2) | | - | Greek Mythology | |
| Larisa | | lah-REE-sah (Russian) | Russian, Ukrainian, Romanian, Latvian, Greek Mythology | |
| Larissa | | lə-RIS-ə (English) | English, Portuguese (Brazilian), Greek Mythology (Latinized) | |
| Lavrentios | | - | Greek | |
| Lazaros | | - | Biblical Greek | |
| Leander | | lee-AN-dər (English) | Greek Mythology (Latinized) | |
| Leandros | | - | Greek Mythology | |
| Leda | | LEE-də (English), LAY-də (English) | Greek Mythology | |
| Lefteris | | - | Greek | |
| Leia | | LAY-a (Popular Culture) | Biblical Greek, Popular Culture | |
| Leon | | LEE-awn (English), LE-awn (German, Polish) | English, German, Polish, Slovene, Croatian, Dutch, Ancient Greek | |
| Leonidas | | - | Greek, Ancient Greek | |