ABG may refer to:
Businesses and organisations Transport businesses
ABG Shipyard, an Indian ship-building firm Avis Budget Group, an American car rental company Abakan-Avia, a Russian airline (ICAO code: ABG)
Other businesses Aditya Birla Group, an Indian conglomerate African Barrick Gold, a Tanzanian mining business Authentic Brands Group, an American entertainment licensing company
Other bodies Alpha Beta Gamma, an honor society Autonomous Bougainville Government, Papua New Guinea
Medicine Arterial blood gas, a blood test Air-bone gap, in audiometry
Places Abingdon Airport, Australia (IATA code: ABG) African Burial Ground National Monument, New York, US Altenburger Land, Thuringia, Germany (vehicle registration code: ABG) Atlanta Botanical Garden, Georgia, US
Other uses Acoustic bass guitar, a musical instrument Asian baby girl, a stereotype of East Asian Americans Asian Beach Games, a pan-Asian multi-sport event Avrom Ber Gotlober (1811–1899), Russian Jewish writer, journalist and educator Abaga language, spoken on New Guinea (ISO 636-3:abg)