| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Lucio | LOO-cho (Italian) | Italian, Spanish | ||
| Lucrezia | loo-KRE-tsyah | Italian | ||
| Ludovica | loo-do-VEE-kah | Italian | ||
| Ludovico | loo-do-VEE-ko | Italian | ||
| Luigi | LWEE-jee | Italian | ||
| Luigia | LWEE-jah | Italian | ||
| Luigina | - | Italian | ||
| Luigino | - | Italian | ||
| Luisa | LWEE-sah (Spanish), LWEE-zah (Italian) | Spanish, Italian | ||
| Luisella | lwee-ZEL-lah | Italian | ||
| Maddalena | mahd-dah-LE-nah | Italian | ||
| Mafalda | mah-FAHL-dah (Italian), mə-FAL-də (Portuguese) | Italian, Portuguese | ||
| Manfredo | - | Italian | ||
| Manlio | - | Italian | ||
| Manuel | mah-NWEL (Spanish), man-oo-EL (Portuguese), MAHN-oo-el (German) | Spanish, Portuguese, German, English, Italian, French, Romanian, Late Greek (Latinized) |