| Lilli | | LI-lee (German), LEEL-lee (Finnish) | German, Finnish | |
| Lilo | | LEE-lo | German | |
| Linda | | LIN-də (English), LIN-dah (German), LEEN-dah (Italian, Finnish) | English, Dutch, German, Italian, Swedish, Norwegian, Danish, Icelandic, French, Latvian, Finnish, Hu | |
| Linus | | LIE-nəs (English), LEE-nuws (German, Swedish) | Greek Mythology (Latinized), Ancient Greek (Latinized), German, Swedish, Norwegian, Danish | |
| Linza | | - | Ancient Germanic | |
| Lisa | | LEE-sə (English), LEE-zah (German), LEE-sah (Dutch) | English, German, Dutch, Swedish, Norwegian, Danish, Italian | |
| Lisbeth | | LEES-bet | German | |
| Liselotte | | LEE-ze-law-tə (German) | Danish, Swedish, Dutch, German | |
| Liupold | | - | Ancient Germanic | |
| Lore (1) | | LO-rə | German | |
| Lorelei | | lawr-e-LIE, LAWR-e-lie | Germanic Mythology | |
| Lorenz | | LO-rents | German | |
| Lothar | | LO-tahr (German) | German, Ancient Germanic | |
| Lotte | | LAW-tə (German) | Danish, Swedish, Norwegian, Dutch, German | |
| Louisa | | loo-EEZ-ə (English), loo-EES-ə (English) | English, German, Dutch | |