| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kornelia | kawr-NE-lee-ah (German), kawr-NEL-yah (Polish) | German, Polish | ||
| Krysia | KRI-shah | Polish | ||
| Krystian | KRIST-yahn | Polish | ||
| Krystiana | krist-YAH-nah | Polish | ||
| Krystyn | KRIS-tin | Polish | ||
| Krystyna | kris-TI-nah | Polish | ||
| Krzesimir | - | Polish | ||
| KrzyŚ | KZHISH | Polish | ||
| Krzysiek | - | Polish | ||
| Krzysztof | KZHISH-tawf | Polish | ||
| Ksawery | ksah-VE-ri | Polish | ||
| Ksenia | KSEN-yah | Polish | ||
| Kuba | KUW-bah | Polish | ||
| Kunegunda | kuw-ne-GUWN-dah | Polish | ||
| 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 |