ABG may refer to:
Aviation
- Abakan-Avia, airline based in Abakan, Russia (ICAO code ABG)
- IATA airport code for Abingdon Airport in State of Queensland, Australia
Medicine
- Arterial blood gas, blood test
- air-bone gap in audiometry
Organisations
- ABG Shipyard, ship-building firm based out of Mumbai, India
- Aditya Birla Group, business conglomerate based in Mumbai, India
- African Barrick Gold, gold mining business operating in Tanzania
- Alpha Beta Gamma, international business honor society
- Authentic Brands Group, American brand development and licensing company
- Autonomous Bougainville Government, government of Autonomous Region of Bougainville, Papua New Guinea
- Avis Budget Group, car rental company
People
- Avrom Ber Gotlober (1811–1899), Jewish writer, poet, playwright, historian, journalist and educator
Places
- Altenburger Land, Thuringia, Germany (vehicle registration code: ABG)
- Atlanta Botanical Garden, Georgia, United States
Other
- Abaga language, a language of Papua New Guinea
- Acoustic bass guitar, a bass instrument with a hollow wooden body
- African Burial Ground National Monument, New York, United States
- Asian baby girl, a stereotype of East Asians in the United States
- Asian Beach Games