| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ludovico | loo-do-VEE-ko | Italian | ||
| Ludovicus | - | Ancient Germanic (Latinized) | ||
| Ludoviko | loo-do-VEE-ko | Esperanto | ||
| Ludvig | - | Swedish, Norwegian, Danish | ||
| Ludvigs | - | Latvian | ||
| 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 |