UAC - Union Aerospace Corporation

UAC may refer to:

Computing

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

Organizations

• United Aircraft Corporation (ОбъединÑ'нная Авиастроительная Корпорация, Obyedinyonnaya Aviasroitelnaya Korporatsiya (OAK)), Russian corporation
• 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 Arab Command, of the Arab League
• Universities Admissions Centre, Australia

Others

• Union Aerospace Corp, a fictional military contractor in Doom (series).