Da may refer to:

• Adi Da, a spiritual leader once known as Da Free John, and Da Love-Ananda
• "The" in African-American Vernacular English and other dialects.

• Air Georgia (airline code DA)
• DA postal area
• Daniel Amos, rock band
• Danish language (ISO 639-1 alpha-2, da)
• Dark Ages (computer game)
• Darmstadt, a town in middle Germany
• Dearness allowance, part of salary calculations in India
• Decision analysis
• Delt Ansvarlig Selskap, or DA, is a Norwegian company form
• Democratic Alliance, a South African political party.
• Deutsche Alternative (German Alternative), a rightist group.
• deviantART, an online artistic community
• Digital-to-analog converter (DA or D/A), in recording
• Dimensional analysis
• Directional antenna, used in AM broadcasting
• District attorney (D.A.), a United States Attorney or County attorney
• Doomsday argument
• Doctor of Arts degree
• Dopamine
• Double anal, a sex position.
• Ducktail, a hairstyle for men.
• Dumbledore's Army in Harry Potter and the Order of the Phoenix
• Dalton (Da), the atomic mass unit
• Degtyarev DA Soviet machine gun, a version of the DP
• Dura-Ace, a Shimano racing bicycle groupset

Dà, a Chinese abbreviation for:

• Réndà: National People's Congress
• Guódà: National Congress of the Communist Party of China

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