| Liliana | | lee-LYAH-nah (Italian, Polish), lil-ee-AN-ə (English) | Italian, Spanish, Portuguese, Romanian, Polish, English | |
| Livia (1) | | LEE-vyah (Italian) | Italian, Romanian, Ancient Roman | |
| Liviana | | lee-VYAH-nah (Italian) | Italian, Ancient Roman | |
| Livianus | | - | Ancient Roman | |
| Liviu | | - | Romanian | |
| Livius | | - | Ancient Roman | |
| Longina | | lawn-GEE-nah (Polish) | Polish, Ancient Roman | |
| Longinus | | - | Ancient Roman | |
| Loredana | | - | Italian, Romanian | |
| Lot (2) | | - | Arthurian Romance | |
| Loukios | | - | Ancient Roman (Hellenized), Biblical Greek | |
| Luca (1) | | LOO-kah (Italian) | Italian, Romanian, German | |
| Lucanus | | - | Ancient Roman | |
| 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 | |