UAC

UAC may refer to:

Computing

• User Account Control, a security feature in Microsoft Windows
• Session Initiation Protocol#User agent client

Organizations

• Ulster Army Council, 1973 Northern Ireland loyalist paramilitary group
• Undeb Amaethwyr Cymru, the Farmer's Union of Wales
• Unemployment Action Center, a non-profit organization in New York City, US
• United Apostolic Church
• Union of Catholic Apostolate
• Université d’Abomey-Calavi, part of the National University of Benin
• United Africa Company, 20th-century British company
  • United Africa Company of Nigeria, formerly a subsidiary of United Africa Company
• United Aircraft Corporation, Russian aerospace and defense company
• United Arab Command, of the Arab League
• United Athletic Conference (football), an American college football conference that started play in 2023.
• Western Athletic Conference, the NCAA Division I conference scheduled to rebrand as the United Athletic Conference in 2026
• Universidad Andina del Cusco, Peru
• Universities Admissions Centre, Australia
• Urban Appalachian Council, Cincinnati, US

Other

• Unaccompanied Alien Children, United States government classification for children in immigration custody
• Unified Arab Code, a Civil Code produced by the Arab League between 1988 and 1996
• Urban adult contemporary, radio music format
• Union Aerospace Corporation, fictional military contractor in the Doom video game franchise
• UAC, a codon for the amino acid tyrosine