| Kristiane | | kris-tee-AH-nə | German | |
| Kristin | | kris-TEEN (Swedish, German), KRIS-tin (English) | Swedish, Norwegian, Danish, German, English | |
| Kristina | | kris-TEE-nah (German) | Swedish, Norwegian, Danish, Russian, German, Slovene, Czech, Lithuanian, Serbian, Croatian, Faroese, | |
| Kristine | | kris-TEEN (English), kris-TEE-nə (German) | Norwegian, Danish, Swedish, English, German | |
| Kunibert | | KOO-nee-bert (German) | German, Ancient Germanic | |
| Kunigunde | | koo-nee-GUWN-də | German | |
| Kuno | | KOO-no (German) | German, Ancient Germanic | |
| Kurt | | KUWRT (German), KURT (English) | German, English | |
| Lambert | | LAHM-bert (German), LAHM-bərt (Dutch), lam-BER (French), LAM-bərt (English) | German, Dutch, French, English, Ancient Germanic | |
| Lamprecht | | LAHMP-rekht (German) | German (Archaic), Ancient Germanic | |
| Landebert | | - | Ancient Germanic | |
| Lanzo | | LAHN-tso (German) | German, Ancient Germanic | |
| Lara (1) | | LAHR-ə (English), LAH-rah (German, Italian, Spanish, Portuguese) | Russian, English, German, French, Italian, Spanish, Portuguese, Dutch, Hungarian, Slovene, Croatian | |
| Lars | | LAHSH (Swedish, Norwegian), LAHRS (Danish, Finnish) | Swedish, Norwegian, Danish, Finnish, Dutch, German | |
| Laurenz | | LOW-rents | German | |