UAB may stand for:

• Uždaroji akcinė bendrovė, a type of limited liability company in Lithuania

Organizations[edit]

• Apostolic United Brethren, polygamist Mormon fundamentalist church
• University of Alabama at Birmingham, a public research university in Birmingham, Alabama, USA
  • UAB Blazers, the athletic program of the above school
• Autonomous University of Barcelona, a public university in Barcelona, Catalonia, Spain
• Unemployment Assistance Board, a British governmental authority that operated from 1934 to 1940
• Underwater Archaeology Branch, Naval History & Heritage Command, a United States Navy unit devoted to underwater archaeology
• Universal Aryan Brotherhood, a white power prison gang in the United States