| Lahja | | LAHH-yah | Finnish | |
| Laila (2) | | LIE-lah | Danish, Norwegian, Swedish, Finnish | |
| Lari | | LAH-ree | Finnish | |
| Lars | | LAHSH (Swedish, Norwegian), LAHRS (Danish, Finnish) | Swedish, Norwegian, Danish, Finnish, Dutch, German | |
| Lasse | | LAHS-se (Danish, Finnish) | Swedish, Norwegian, Danish, Finnish | |
| Lassi | | LAHS-see | Finnish | |
| Launo | | - | Finnish (Rare) | |
| Laura | | LAWR-ə (English), LOW-rah (Spanish, Italian, Finnish, Polish, Swedish, Norwegian, Danish, German, Dutch), LAW-oo-raw (Hungarian) | English, Spanish, Italian, Portuguese, Romanian, Finnish, Estonian, Hungarian, Polish, Slovene, Croa | |
| Lauri | | LOW-ree | Finnish | |
| Lea | | LE-ah (German, Finnish) | German, Dutch, Swedish, Norwegian, Danish, Finnish, Slovene, Croatian | |
| Leena | | LE:-nah (Finnish) | Finnish, Estonian | |
| Leevi | | LE:-vee | Finnish | |
| LemminkÄInen | | - | Finnish Mythology | |
| Lempi | | LEM-pee | Finnish | |
| Leo | | LE-o (German, Finnish), LAY-o (Dutch), LEE-o (English) | German, Dutch, Swedish, Norwegian, Danish, Finnish, English, Croatian, Late Roman | |