| Acronym | Definition |
|---|
| UAC | User Account Control (Microsoft Windows Vista) |
| UAC | Utah Avalanche Center (Salt Lake City, UT) |
| UAC | Union Aerospace Corporation (Doom series) |
| UAC | User Agent Client |
| UAC | User Account Controls |
| UAC | Universidade dos Açores (Portugese) |
| UAC | United Aircraft Corporation (Russia) |
| UAC | Universal Access Concentrator |
| UAC | Upper Area Control (aviation) |
| UAC | Universidad Autonoma de Coahuila (Spanish: Coahuila University Autonoma) |
| UAC | United Africa Company |
| UAC | University Assessment Committee |
| UAC | United African Company (of Nigeria) |
| UAC | User Advisory Committee |
| UAC | Umbilical Arterial Catheter |
| UAC | Urban Assault Course (US Army) |
| UAC | Urban Appalachian Council |
| UAC | Unemployment Appeals Commission |
| UAC | University Admission Centre (NSW/ACT Australia University Admission Centre) |
| UAC | Universal Access Control |
| UAC | United Anglican Church |
| UAC | User Assurance Co-Ordinator (UK project management role) |
| UAC | Underwater Acoustic Communications |
| UAC | Unit Advisory Council (US Air Force) |
| UAC | Up A Creek |
| UAC | Unione dell'Apostolato Cattolico (Italian: Union of Catholic Apostolate) |
| UAC | Unsafe Act or Condition |
| UAC | Uniform Annual Cost |
| UAC | Unit Abatement Cost |
| UAC | Uninterrupted Automatic Control |
| UAC | Unified Army Corps |
| UAC | University Athletic Council |
| UAC | Update Authority Component (subsystem of Message Conversion System) |
| UAC | Unassigned Channel (AT&T) |
| UAC | Use As Constructed |
| UAC | Unnecessary Acronym Creator (humor) |
| UAC | United Army Corps |
| UAC | Utility Airplane Council |
| UAC | United Acquisition Corporation |
| UAC | Ungooroo Aboriginal Corporation, Inc (Australia) |