| Britt | | - | Swedish, Norwegian, Danish | |
| Britta | | - | Swedish, Norwegian, Danish | |
| Cai (1) | | - | Swedish, Norwegian, Danish | |
| Caj | | - | Swedish, Norwegian, Danish | |
| Cajsa | | KIE-sah | Swedish | |
| Camilla | | kə-MIL-ə (English), kah-MEEL-lah (Italian, Danish), KAH-meel-lah (Finnish) | English, Italian, Danish, Swedish, Norwegian, Finnish, German, Ancient Roman, Roman Mythology | |
| Carin | | - | Swedish | |
| Carina (2) | | kah-REE-nah (German) | Swedish, Norwegian, Danish, German | |
| Carita | | - | Swedish | |
| Carl | | KAHRL (German, English) | German, Swedish, Norwegian, Danish, English | |
| Carola | | kah-RO-lah (German) | Italian, German, Dutch, Swedish | |
| Carolina | | kah-ro-LEE-nah (Italian, Spanish), ka-roo-LEE-nə (Portuguese), ker-ə-LIEN-ə (English), kar-ə-LIEN-ə (English) | Italian, Spanish, Portuguese, English, Swedish | |
| Caroline | | ka-ro-LEEN (French), KER-ə-lien (English), KER-ə-lin (English), KAR-ə-lien (English), KAR-ə-lin (English) | French, English, German, Swedish, Norwegian, Danish, Dutch | |
| Casper | | KAHS-pər (Dutch) | Dutch, Swedish, Norwegian, Danish | |
| Catharina | | kah-tah-REE-nah (Dutch) | Dutch, Swedish | |