| Daciana | | dah-CHYAHN-ah | Romanian | |
| Dan (2) | | DAN (English), DAHN (Romanian, Czech, Swedish) | English, Spanish, French, Portuguese, Romanian, Czech, German, Polish, Swedish, Danish, Norwegian | |
| Dana (1) | | DAH-nah (Czech, Slovak, German) | Romanian, Czech, Slovak, German, Hebrew | |
| Daniela | | dahn-YE-lah (German) | Italian, German, Czech, Slovak, Romanian, Portuguese, Spanish, Bulgarian, Macedonian, English | |
| 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) | |
| Darius | | də-RIE-əs (English), DER-ee-əs (English), DAR-ee-əs (English) | English, Lithuanian, Romanian, Biblical, Biblical Latin | |
| Decebal | | - | Romanian | |
| Decima | | DEK-i-ma | Ancient Roman | |
| Decimus | | DE-ki-muws | Ancient Roman | |
| Delia (1) | | DEEL-ee-ə (English), DEEL-yə (English), DEL-yah (Italian, Spanish) | English, Italian, Spanish, Romanian, Greek Mythology | |
| Delphina | | - | Late Roman | |
| Delphinus | | - | Late Roman | |
| Demetra | | - | Italian, Romanian, Greek | |
| Denis | | de-NEE (French), DEN-is (English), DE-nis (German) | French, Russian, English, German, Czech, Slovak, Slovene, Romanian, Croatian | |
| Denisa | | de-NEE-sah (Romanian) | Czech, Slovak, Romanian | |