| Lowell | | LO-əl | English | |
| Loyd | | LOID | English | |
| Luana | | loo-AN-ə (English), loo-AH-nah (Italian) | English, Italian, Portuguese | |
| Luann | | loo-AN | English | |
| Luanna | | loo-AN-ə | English (Rare) | |
| Luanne | | loo-AN | English | |
| Lucas | | LOO-kəs (English), LUY-kahs (Dutch), luy-KAH (French), LOO-kəsh (Portuguese), LOO-kahs (Spanish) | English, Dutch, French, Portuguese, Spanish, Biblical Latin | |
| Lucetta | | - | English | |
| Lucia | | loo-CHEE-ah (Italian), LOO-tsee-ah (German), LOO-shə (English), loo-SEE-ə (English) | Italian, German, English, Swedish, Norwegian, Danish, Romanian, Slovak, Ancient Roman | |
| Lucian | | LOO-shən (English) | Romanian, English | |
| Lucile | | loo-SEEL | French, English | |
| Lucille | | loo-SEEL | French, English | |
| Lucinda | | loo-SIN-də (English) | English, Portuguese, Literature | |
| Lucius | | LOO:-ki-uws (Ancient Roman), LOO-shəs (English), LOO-see-əs (English) | Ancient Roman, Biblical, English | |
| Lucky | | LUK-ee (English) | English, Indian, Hindi | |