| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ludmila | - | Czech, Russian | ||
| Ludmilla | - | Russian, Bulgarian | ||
| Ludoviko | loo-do-VEE-ko | Esperanto | ||
| Ludvig | - | Swedish, Norwegian, Danish | ||
| Ludvik | - | Slovene | ||
| Ludwik | LUWT-veek | Polish | ||
| Ludwika | luwt-VEE-kah | Polish | ||
| Luella | loo-EL-ə | English | ||
| Lug | - | Irish Mythology | ||
| Lugaid | - | Irish Mythology | ||
| Lugh | - | Irish Mythology | ||
| Lughaidh | LOO-ee | Irish, Irish Mythology | ||
| Luigsech | - | Ancient Irish | ||
| Luis | LWEES | Spanish | ||
| Luisa | LWEE-sah (Spanish), LWEE-zah (Italian) | Spanish, Italian |