| Kassandra | | kə-SAN-drə (English) | Greek Mythology, Ancient Greek, English (Modern) | |
| Kassandros | | - | Ancient Greek | |
| Kata | | KAH-tah (Finnish) | Hungarian, Finnish, Croatian | |
| Katarina | | kah-tah-REE-nah (German, Swedish) | German, Swedish, Norwegian, Danish, Hungarian, Croatian, Serbian, Slovene | |
| Kate | | KAYT (English) | English, Croatian | |
| KateŘIna | | - | Czech | |
| Katelijn | | kah-tə-LIEN | Dutch | |
| Katelijne | | kah-tə-LIE-nə | Dutch | |
| Katerina | | - | Macedonian, Russian, Bulgarian, Greek, Late Roman | |
| Katica | | - | Croatian, Slovene, Hungarian | |
| Katina | | - | Greek, Macedonian | |
| Katinka | | kah-TING-kah (German) | German, Dutch | |
| Katja | | KAHT-yah (German, Dutch) | German, Swedish, Norwegian, Danish, Dutch, Slovene | |
| Katka | | KAHT-kah | Czech, Slovak | |
| Katlego | | - | Southern African, Tswana | |