UAA may refer to:
- UAA ("ochre"), a genetic stop codon
- Uniform Adoption Act, a proposed model law in USA
- United Artists Associated, a former distributor of theatrical feature films and short subjects for television
- Universal Audio Architecture, an initiative to standardize audio devices in Microsoft Windows
- Universidad Autónoma de Aguascalientes, a Mexican public university
- University of Alaska Anchorage, the largest school of the University of Alaska System
- University Athletic Association, an athletic conference in USA
- Uskudar American Academy, a private coeducational high school located in Istanbul, Turkey
- Autonomous University of Aguascalientes in Spanish Universidad Autónoma de Aguascalientes(UAA)
- Undeliverable As Addressed
- Universidad Adventista de las Antillas
- University Aviation Association
- UrbanTerror Admin Alliance