| UAA | Ufficio Assistenza Automobilistica 
| Others |
| UAA | Ukrainian Alumni Association
| Others |
| UAA | Undeliverable As Addressed
| Others |
| UAA | Under Armour Association
| Others |
| UAA | Unified Access Architecture
| Others |
| UAA | Unified Audio Architecture
| Others |
| UAA | Uniform Adoption Act of 1994
| Others |
| UAA | United Authors Association
| Others |
| UAA | Universal Accreditation Act
| Others |
| UAA | Universal Administered Address
| Others |
| UAA | Universal Assigned Address
| Others |
| UAA | Universal Audio Architecture
| Others |
| UAA | Universally Administered Address
| Others |
| UAA | University Agency Affiliation
| Others |
| UAA | University Athletic Association
| Others |
| UAA | University Athletic Association, Inc.
| Others |
| UAA | University Aviation Association
| Others |
| UAA | University of Alaska Anchorage
| Others |
| UAA | Upper A-Arm
| Others |
| UAA | Urban Adaptation Assessment
| Others |
| UAA | Urban Affairs Association
| Others |
| UAA | Usable Agricultural Area
| Others |
| UAA | Use Attainability Analysis
| Others |
| UAA | Used Agricultural Area
| Others |
| UAA | User Account and Authentication
| Others |
| UAA | User Account Authentication
| Others |
| UAA | User Authorization Answer
| Others |
| UAA | Uskudar American Academy
| Others |
| UAA | Utah Apartment Association
| Others |
| UAA | Utilised Agricultural Area
| Others |
| UAA | Utility Arborist Association
| Others |
| UAA | Uyghur American Association
| Others |