| Cristiano | | kree-STYAH-no (Italian), kreesh-TYA-noo (Portuguese) | Italian, Portuguese | |
| Cristina | | kree-STEE-nah (Italian, Spanish) | Italian, Spanish, Portuguese, Romanian | |
| Cristoforo | | - | Italian | |
| Crocetta | | kro-CHET-tah | Italian | |
| Crocifissa | | kro-chee-FEE-sah | Italian | |
| Dafne | | DAHF-ne | Italian | |
| Damiana | | dah-MYAH-nah | Italian | |
| Damiano | | dah-MYAH-no | Italian | |
| Dania (1) | | - | Italian | |
| Daniela | | dahn-YE-lah (German) | Italian, German, Czech, Slovak, Romanian, Portuguese, Spanish, Bulgarian, Macedonian, English | |
| Daniele | | dah-NYE-le | Italian | |
| Danilo | | - | Italian, Portuguese, Spanish, Slovene, Serbian, Croatian | |
| Dante | | DAHN-te | Italian | |
| Daria | | DAHR-yah (Italian, Polish, Romanian), DAHR-ee-ə (English), DER-ee-ə (English), DAR-ee-ə (English) | Italian, Polish, Romanian, English, Croatian, Late Greek (Latinized) | |
| Dario | | DAHR-yo (Italian) | Italian, Croatian | |