| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Lucio | LOO-cho (Italian) | Italian, Spanish | ||
| Lucius | LOO:-ki-uws (Ancient Roman), LOO-shəs (English), LOO-see-əs (English) | Ancient Roman, Biblical, English | ||
| Lucky | LUK-ee (English) | English, Indian, Hindi | ||
| Lucretia | - | Ancient Roman, Roman Mythology | ||
| Lucretius | - | Ancient Roman | ||
| Lucrezia | loo-KRE-tsyah | Italian | ||
| Ludger | LUD-gər (Dutch) | German, Dutch | ||
| Ludis | - | Latvian | ||
| Ludmila | - | Czech, Russian | ||
| Ludmilla | - | Russian, Bulgarian | ||
| Ludolf | LOO-dawlf (German) | German, Dutch, Ancient Germanic | ||
| Ludovica | loo-do-VEE-kah | Italian | ||
| Ludovico | loo-do-VEE-ko | Italian | ||
| Ludovicus | - | Ancient Germanic (Latinized) | ||
| Ludoviko | loo-do-VEE-ko | Esperanto |