| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Diann | die-AN | English | ||
| Dianna | die-AN-ə | English | ||
| Dianne | dee-AHN (French), die-AN (English) | French, English | ||
| Diantha | - | Dutch, English (Rare) | ||
| Diarmad | - | Scottish | ||
| Diarmaid | DEER-mid | Irish, Irish Mythology | ||
| Diarmait | - | Irish, Irish Mythology | ||
| Diarmuid | - | Irish, Irish Mythology | ||
| Dick (1) | DIK | English | ||
| Dicun | - | Medieval English | ||
| Didacus | - | Medieval Spanish | ||
| Diego | DYE-go | Spanish | ||
| Dieuwe | DOO-ə | Frisian | ||
| Dieuwer | - | Frisian | ||
| Dieuwert | - | Frisian |