| Da | | | Gender: | Male | | Origin: | Chinese |
| | | | | Chinese name meaning "attainment". Also a martial arts term meaning "big" or "hit, strike". |
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| Daan | | | Gender: | Male | | Origin: | Dutch |
| | | | | Nickname for Dutch Daniël, meaning "God is my judge". |
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| Dabulamanzi | | | Gender: | Male | | Origin: | African |
| | | | | African Zulu name meaning "the divider of the waters". |
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| Dacey | | | Gender: | Unisex | | Origin: | Irish |
| | | | | "Tenant, vassal". Irish surname transferred to unisex forename use, itself originally a nickname for a feudal servant, a member of the Déise, a word which ultimately traces back to Indo-European *dem-s, meaning "house". |
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| Dachs | | | Gender: | Male | | Origin: | German |
| | | | | "Badger". German nickname for a hunter of badgers or someone having badger-like qualities, from the vocabulary word dahs "badger". |
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