UAG may stand for:
- Universidad Autónoma de Guadalajara, a private university in Mexico
- Estudiantes Tecos, a Mexican professional football (soccer) club, previously associated with the Universidad Autónoma de Guadalajara, and as Tecos UAG
- Microsoft Forefront Unified Access Gateway, Microsoft solution for remote access to corporate applications
- United Auto Group, an American automotive retailer
- The African Gymnastics Union (French: l'Union Africaine de Gymnastique)
- Afra Airlines (ICAO code UAG), an airline in Ghana
- In biology, the "amber" stop codon UAG; see genetic code
- Up and Go (Breakfast Beverage)
- UAG a video game also known as Thundercade
- UAG is the abbreviation for UniversAssure Group, Inc. a Marketing corporation located in Virginia, United States.