| Diaz | A name meaning days or sunlight. |
| Didi | Divine; heavenly |
| Diede | Powerful ruler of the people |
| Diederick | Derived from Germanic 'dietrich,' meaning 'ruler of the people' or 'people's leader.' |
| Diedrich | A powerful ruler of the people |
| Diello | Italian surname meaning 'of the valley' or 'from the valley', possibly derived from a place name. |
| Diesel | Derived from the name Dietrich. |
| Dieudonn | A gift given by the Almighty. |
| Dilay | A beautiful moon of the heart. |
| Dilek | A sincere wish or deep desire. |
| Dill | A fragrant herb used in cooking. |
| Dillard | Dillard is of French origin, derived from 'de la dure,' meaning 'from the hard or strong place'. |
| Dillinger | Dillinger is a surname of German origin, meaning 'son of the dil' or 'dill' valley dweller. |
| Dilly | A term for something remarkable. |
| Dimetri | A variation of the name Demetrius. |
| Dimetric | Relating to two distinct measures. |
| Dimetrie | A variant of the name Demetrius. |
| Dimetrios | A follower of the goddess Demeter. |
| Dimetrus | A variant of the name Demetrius. |
| Dimitricus | A formal variation of Demetrius. |
| Dimitrij | A Slavic form of the name Demetrius. |
| Dimos | Greek name meaning 'of the people' or 'belonging to the people', derived from demos, meaning 'people'. |
| Dindraine | A name of Arthurian legend origin. |
| Dinh Hoa | Flower at the peak |
| Diokles | People-slayer or destroyer of people, derived from Greek 'dios' meaning people and 'kles' meaning slayer. |
| Dionicio | Dionicio is a Spanish name derived from Dionysius, meaning 'follower of Dionysus' or 'divine gift'. |
| Dionisio | Dionisio is a Spanish variant of Dionysius, meaning 'belonging to Dionysus' or 'follower of the god of wine'. |
| Diot | Follower of Dionysus |
| Dipper | A person who dips or one who is skilled at dipping or pouring liquids. |
| Disung | Disung is a rare surname of African origin, possibly derived from a Yoruba or Igbo name meaning 'born on a Sunday'. |
| Django | Django is a name of Tamashek origin, meaning 'free spirit' or 'happy' in the Tuareg language. |
| Djimon | Djimon means 'born on a Monday' in the Ewe language of West Africa, specifically in Togo and Ghana. |
| Dlila | Hebrew name meaning delicate or weak. |
| Doak | English surname derived from Old English 'docc' or 'dokk', meaning 'ditch' or 'stream'. |
| Dobbin | A strong and sturdy horse, often used as a pack animal or for heavy labor. |
| Docia | Greek name meaning glory or honor. |
| Dock | A structure built alongside a shore or bank to moor or repair boats. |
| Dollee | English name meaning a gift of God. |
| Dolley | English name meaning gift of the Lord. |
| Dolvett | Dolvett is a variant of Dolvett, a name of African origin meaning 'gift of God' or 'divine gift'. |