| Karen (1) | | KAH-ren (Danish), KER-ən (English), KAR-ən (English) | Danish, Norwegian, Icelandic, German, English | |
| Karena | | - | English (Rare) | |
| Karenza | | - | English (Rare) | |
| Karin | | KAH-rin (Swedish, German, Dutch), KAH-reen (Finnish), KER-ən (English), KAR-ən (English) | Swedish, Norwegian, Danish, German, Dutch, Finnish, English | |
| Karina | | kah-REE-nah (Swedish, Polish, German, Russian), kə-REE-nə (English) | Swedish, Danish, Norwegian, Polish, German, Russian, English | |
| Karissa | | kə-RIS-ə | English | |
| Karl | | KAHRL (German, Danish, English, Finnish) | German, Swedish, Norwegian, Danish, English, Finnish, Ancient Germanic | |
| Karlee | | KAHR-lee | English (Modern) | |
| Karlene | | KAHR-leen | English | |
| Karly | | KAHR-lee | English (Modern) | |
| Karolyn | | KER-ə-lin, KAR-ə-lin | English | |
| Karrie | | KER-ee, KAR-ee | English | |
| Karyn | | KER-ən, KAR-ən | English | |
| Karyna | | - | English (Rare) | |
| Kasandra | | kə-SAN-drə (English) | English (Modern), Polish | |