| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kleopatra | - | Ancient Greek | ||
| Kleopatros | - | Ancient Greek | ||
| Klopas | - | Biblical Greek | ||
| Klotho | - | Greek Mythology | ||
| Klytaimnestra | - | Greek Mythology | ||
| KlytiË | - | Greek Mythology | ||
| Koios | - | Greek Mythology | ||
| Konstantina | kon-stahn-DEE-nah | Greek | ||
| Konstantinos | kon-stahn-DEE-nos | Greek | ||
| KorË | - | Greek Mythology | ||
| Koralia | - | Greek, Late Greek | ||
| Kore | - | Greek Mythology | ||
| Korina | - | Greek | ||
| Korinna | - | Ancient Greek | ||
| Kosmas | - | Ancient Greek |