| LourenÇO | | law-REN-soo (Portuguese), law-REN-soo (Brazilian Portuguese) | Portuguese | |
| Loviise | | - | Estonian | |
| LuĈJo | | LOO-chyo | Esperanto | |
| LuÍS | | loo-EESH | Portuguese | |
| LuÍSa | | loo-EE-zə | Portuguese | |
| Luana | | loo-AN-ə (English), loo-AH-nah (Italian) | English, Italian, Portuguese | |
| LucÍLia | | - | Portuguese | |
| Lucas | | LOO-kəs (English), LUY-kahs (Dutch), luy-KAH (French), LOO-kəsh (Portuguese), LOO-kahs (Spanish) | English, Dutch, French, Portuguese, Spanish, Biblical Latin | |
| Luciana | | loo-CHAH-nah (Italian), loo-THYAH-nah (Spanish), loo-SYAH-nah (Latin American Spanish) | Italian, Spanish, Portuguese, Ancient Roman | |
| Luciano | | loo-CHAH-no (Italian), loo-THYAH-no (Spanish), loo-SYAH-no (Latin American Spanish) | Italian, Spanish, Portuguese | |
| Lucinda | | loo-SIN-də (English) | English, Portuguese, Literature | |
| Ludoviko | | loo-do-VEE-ko | Esperanto | |
| Luisinho | | - | Portuguese | |
| Luiz | | - | Portuguese (Brazilian) | |
| Luiza | | luw-EE-zah (Polish) | Polish, Portuguese, Romanian | |