| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ladislav | - | Czech, Slovak, Slovene, Croatian | ||
| Ladislava | - | Czech, Slovak | ||
| Lenka | - | Czech, Slovak | ||
| LeoŠ | LE-osh | Czech | ||
| Libena | - | Czech | ||
| Libor | - | Czech | ||
| LibuŠE | - | Czech | ||
| Livie | - | French, Czech | ||
| Ljuba | LYOO-bah (Serbian, Croatian) | Serbian, Croatian, Czech, Slovene, Macedonian | ||
| LuboŠ | - | Czech | ||
| LubomÍR | - | Czech | ||
| Lucie | luy-SEE (French), luw-TSI-e (Czech) | French, Czech | ||
| LudĚK | - | Czech | ||
| Ludmila | - | Czech, Russian | ||
| LudvÍK | - | Czech |