| Dicun | | - | Medieval English | |
| Digby | | DIG-bee | English (Rare) | |
| Diggory | | DIG-ə-ree | English (Rare) | |
| Dillan | | DIL-ən | English (Modern) | |
| Dillon | | DIL-ən | English | |
| Dina (1) | | DIE-nə (English) | English, Biblical Latin, Biblical Greek | |
| Dinah | | DIE-nə (English) | Biblical, Biblical Hebrew, English | |
| Dion | | DEE-ahn (English), dee-AHN (English) | Ancient Greek, English | |
| Dione (2) | | dee-AHN | English | |
| Dionisia | | - | Medieval English | |
| Dionne | | dee-AHN | English | |
| Diot | | - | Medieval English | |
| Dirk | | DIRK (Dutch), DEERK (German), DURK (English) | Dutch, German, English | |
| Divina | | - | English (Rare) | |
| Dixie | | DIK-see | English | |