Ada may refer to:

Places

Africa

* Ada Foah, a town in Ghana * Ada (Ghana parliament constituency) * Ada, Osun, a town in Nigeria

Asia

* Adeh, Urmia, Ada, Urmia, a village in West Azerbaijan Province, Iran * Ada, Karaman, a village in Karaman Province, Turkey

Europe

* Ada, Bosnia and Herzegovina, a village * Ada, Croatia, a village * Ada, Serbia, a town and municipality * Ada Ciganlija or Ada, a river island artificially turned into a peninsula in Belgrade, Serbia

United States

* Ada, Alabama, an unincorporated community * Ada County, Idaho * Ada, Kansas, an unincorporated community * Ada Township, Michigan * Ada, Minnesota, a city * Ada Township, Dickey County, North Dakota * Ada, Ohio, a village * Ada, Oklahoma, a city * Ada, Oregon, an unincorporated community * Ada Township, Perkins County, South Dakota * Ada, West Virginia, an unincorporated community * Ada, Wisconsin, an unincorporated community

Other

* Ada River (disambiguation), various rivers * 523 Ada, an asteroid

Film and television

* Ada TV, a television channel in the Turkish Republic of Northern Cyprus * Ada (1961 film), ''Ada'' (1961 film), a 1961 film by Daniel Mann *Ada (2019 film), ''Ada'' (2019 film), a short biopic about Ada Lovelace * ''Ada... A Way of Life'', a 2008 Bollywood musical by Tanvir Ahmed * Ada (dog actor), a dog that played Colin on the sitcom ''Spaced'' * Ada, one of the main characters in 1991 movie Armour of God II: Operation Condor#Cast, ''Armour of God II: Operation Condor''

Biology

* Ada (plant), ''Ada'' (plant), a genus of orchids * Adenosine deaminase, an enzyme involved in purine metabolism * Ada (protein), an enzyme induced by treatment of bacterial cells

Computer science

* Ada (programming language), programming language based on Pascal * Ada (computer virus)

Air travel

* Ada Air, a regional airline based in Tirana, Albania * Saipan International Airport, Francisco C. Ada Airport, Saipan Island, Northern Mariana Islands

Schools

* Ada, the National College for Digital Skills, a further education college in Tottenham Hale, London * Ada High School (Ohio) * Ada Independent School District, Oklahoma

People

* Ada (name), a feminine given name and a surname, including a list of people and fictional characters * Ada Lovelace (1815–1852), computer scientist sometimes regarded as the first computer programmer * Ada of Caria (fl. 377 – 326 BCE), satrap of ancient Caria and adoptive mother of Alexander the Great

Other uses

* List of tropical storms named Ada * Ada (food), a traditional Kerala delicacy * Ada, the cryptocurrency of the Cardano (blockchain platform), Cardano blockchain platform * Ada Bridge, Belgrade, Serbia * , a cargo vessel built for the London and South Western Railway * Ada (ship), ''Ada'' (ship), a wooden ketch, wrecked near Newcastle, New South Wales, Australia * Ada-class corvette, Ada class, a class of anti-submarine corvettes developed by Turkey * ''Ada or Ardor: A Family Chronicle'', novel by Vladimir Nabokov * Dangme language, spoken in Ghana (ISO 639-2 and 639-3 code "ada") * Ada Health GmbH, a symptom checker app