| Leopoldo | | le-o-POL-do (Spanish) | Italian, Spanish, Portuguese | |
| LetÍCia | | le-TEE-zyə (Portuguese), le-CHEE-zyə (Brazilian Portuguese) | Portuguese | |
| Lia (1) | | LEE-ah (Italian), LEE-ə (Portuguese, Georgian) | Italian, Portuguese, Georgian, Biblical Latin | |
| Liana | | - | Italian, Portuguese, Romanian, English | |
| Liliana | | lee-LYAH-nah (Italian, Polish), lil-ee-AN-ə (English) | Italian, Spanish, Portuguese, Romanian, Polish, English | |
| Lino | | LEE-no (Italian, Spanish), LEE-naw (Galician) | Italian, Spanish, Portuguese, Galician | |
| Lorena (1) | | - | Spanish, Portuguese, Italian, Croatian | |
| LourenÇO | | law-REN-soo (Portuguese), law-REN-soo (Brazilian Portuguese) | Portuguese | |
| 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 | |