| Diana | | die-AN-ə (English), dee-AH-nah (Italian, German, Dutch) | English, Spanish, Italian, Portuguese, Romanian, Catalan, German, Dutch, Danish, Swedish, Norwegian, | |
| Didacus | | - | Medieval Spanish | |
| Diego | | DYE-go | Spanish | |
| Dimas | | - | Spanish, Portuguese | |
| Dionisio | | dyo-NEE-syo (Spanish), dyo-NEE-zyo (Italian) | Spanish, Italian | |
| Dolores | | do-LO-res (Spanish), də-LAWR-is (English) | Spanish, English | |
| Dominga | | do-MEENG-gah | Spanish | |
| Domingo | | do-MEENG-go | Spanish | |
| Domitila | | - | Spanish, Portuguese | |
| Donato | | do-NAH-to (Italian, Spanish) | Italian, Spanish, Portuguese | |
| Dora | | DAWR-ə (English), DO-rah (Croatian, Serbian) | English, Dutch, Spanish, Greek, Croatian, Serbian | |
| Dorita | | - | English (Rare), Spanish | |
| Dorotea | | do-ro-TE-ah (Italian, Spanish), DO-ro-te-ah (Finnish) | Italian, Spanish, Swedish, Finnish, Croatian | |
| Duilio | | DWEE-lyo | Italian, Spanish | |
| Dulce | | DOOL-the (Spanish), DOOL-se (Latin American Spanish) | Spanish, Portuguese | |