| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Kleon | - | Ancient Greek | ||
| Kleopatra | - | Ancient Greek | ||
| Kleopatros | - | Ancient Greek | ||
| KnÚTr | - | Ancient Scandinavian | ||
| Knox | NAHKS | English | ||
| Koby | KO-bee | English (Modern) | ||
| Kodey | KO-dee | English (Rare) | ||
| Kody | KO-dee | English (Modern) | ||
| Kohar | - | Armenian | ||
| Kolby | KOL-bee | English (Modern) | ||
| Kole | KOL | English (Modern) | ||
| Kolleen | kah-LEEN | English (Rare) | ||
| Konnor | KAHN-ər | English (Modern) | ||
| Konrad | KAWN-raht (German, Polish) | German, Swedish, Norwegian, Danish, Polish, Slovene | ||
| Korbin | KAWR-bin | English (Modern) |