| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ludwig | LOOT-vikh, LOOT-vik | German | ||
| Lugubelenus | - | Ancient Celtic | ||
| Luigi | LWEE-jee | Italian | ||
| Luigia | LWEE-jah | Italian | ||
| Luigina | - | Italian | ||
| Luigino | - | Italian | ||
| Luigsech | - | Ancient Irish | ||
| Luis | LWEES | Spanish | ||
| Luisa | LWEE-sah (Spanish), LWEE-zah (Italian) | Spanish, Italian | ||
| Luise | loo-EE-zə | German | ||
| Luisella | lwee-ZEL-lah | Italian | ||
| Luisina | lwee-SEE-nah | Spanish | ||
| Luisita | lwee-SEE-tah | Spanish | ||
| Luitgard | - | German, Ancient Germanic | ||
| Luitger | - | German (Archaic) |