DA

DA, da, or dA may refer to:

• Da (play), a Tony-winning play by Hugh Leonard
• Da (film), a movie adaptation of the play by Hugh Leonard
• Adi Da, a spiritual leader once known as Da Free John, and Da Love-Ananda
• Da!, a Russian youth movement
• Da (political party), a defunct Israeli political party
• Da County, county in Sichuan, China
• Da River in Vietnam
• Dalton (unit), the atomic mass unit (symbol Da)
• Danish language (ISO 639-1 alpha-2 code da)
• Deca- (symbol da), an SI prefix for a factor of 10
• DeviantArt, an English speaking, American based website that focuses on art, which is commonly abbreviated to 'dA'
• SJ Da, a Swedish locomotive
• Da., Occitan abbreviation for Dòna (Mrs.)

DA or D.A. is an acronym or abbreviation for:

• DA postal area
• Dark Ages (computer game)
• Darmstadt, a town in middle Germany
• Debtors Anonymous
• Deerfield Academy, a preparatory boarding school located in Deerfield, Massachusetts
• Degtyarev Aviation-mounted, a Soviet machine gun
• Democratic Alliance (South Africa), a South African political party.
• Denmark, a country in northern Europe (FIPS country code DA, obsolete NATO country code DA)
• Department of Agriculture, an executive department in the Philippines
• Desktop Authority, a software manufacturer of network administration products for Microsoft Windows-based networks, also known as ScriptLogic
• Deutsche Alternative (German Alternative), a rightist group
• DeviantArt, an online artistic community
• Diploma in Anaesthetics, an obsolete postgraduate qualification in anaesthetic practice
• Dielectric absorption, a factor of permittivity for capacitors
• Directory assistance, a phone service used to find out the contact information of a residence, business, or government entity
• District attorney (D.A.), a United States Attorney or County attorney
  • The D.A. (1971 TV series), an NBC dramatic series
  • The D.A. (2004 TV series), an ABC dramatic series
• Dragon Age, a video game series created by Bioware
  • Dragon Age: Origins, first game of the series, often just called Dragon Age
• Doctor of Arts degree
• Domoic acid, a neurotoxin produced by phytoplankton
• Domus Academy, a design school in Milan, Italy
• Dopamine neurotransmitter
• Double action (disambiguation), various meanings
• Dominion Atlantic Railway
• Duck's Ass or Duck's Arse, a hairstyle
• Dumbledore's Army, a group in the Harry Potter series
• United States Department of the Army