| Danijel | | - | Slovene, Croatian, Serbian | |
| Danijela | | - | Slovene, Croatian, Serbian | |
| Danilo | | - | Italian, Portuguese, Spanish, Slovene, Serbian, Croatian | |
| Darija | | - | Croatian, Serbian, Slovene | |
| Darinka | | - | Slovene, Croatian | |
| Darja | | - | Slovene, Czech | |
| Darko | | - | Croatian, Serbian, Slovene, Macedonian | |
| Davor | | - | Croatian, Serbian, Slovene | |
| Dejan | | - | Serbian, Croatian, Slovene, Macedonian | |
| Dejana | | - | Serbian, Croatian, Slovene | |
| Denis | | de-NEE (French), DEN-is (English), DE-nis (German) | French, Russian, English, German, Czech, Slovak, Slovene, Romanian, Croatian | |
| Dijana | | dee-YAH-nah (Croatian), DEE-yah-nah (Croatian) | Croatian, Serbian, Slovene, Macedonian | |
| Dimitrij | | - | Slovene, Macedonian | |
| Domen | | - | Slovene | |
| Dominik | | daw-MEE-neek (Polish), DO-mi-nik (German) | Czech, Slovak, Slovene, Polish, German, Hungarian, Croatian | |