| Luuk | | LUYK | Dutch | |
| Luus | | LUYS | Dutch, Limburgish | |
| Lycurgus | | - | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Lycus | | - | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Lydia | | LID-ee-ə (English), LUY-dee-ah (German, Finnish) | English, German, Finnish, Biblical, Old Church Slavic, Biblical Latin, Biblical Greek | |
| Lydie | | - | French | |
| Lykos | | - | Greek Mythology, Ancient Greek | |
| Lykourgos | | - | Greek Mythology, Ancient Greek | |
| Lylou | | lee-LOO | French | |
| Lysander | | - | Ancient Greek (Latinized) | |
| Lysandra | | - | Ancient Greek | |
| Lysandros | | - | Ancient Greek | |
| Lysanne | | - | Dutch | |
| Lysimachos | | - | Ancient Greek | |
| Lysimachus | | - | Ancient Greek (Latinized) | |