| UCA | Uganda Cricket Association  
| Cricket |
| UCA | Unauthorized Computer Access
| Others |
| UCA | Undefinitized Contract Action
| Others |
| UCA | Under Chair Activities
| Others |
| UCA | Under Color Addition
| Others |
| UCA | Under Construction Always
| Others |
| UCA | Underground Construction Association
| Others |
| UCA | Underground Contractors Association
| Others |
| UCA | Unenclosed Covered Area
| Others |
| UCA | Unicast Address
| Others |
| UCA | Unicode Collation Algorithm
| Others |
| UCA | Unified Caring Association
| Others |
| UCA | Unified Corporate Authority
| Others |
| UCA | Union Council Administration
| Others |
| UCA | Union de Cooperativas Agropecuarias
| Others |
| UCA | Unique Common Ancestor
| Others |
| UCA | Unique Compatibility Additives
| Others |
| UCA | United Canadian Alliance
| Others |
| UCA | United Canine Association
| Others |
| UCA | United Capoeira Association
| Others |
| UCA | United Cheerleaders of America
| Others |
| UCA | United Cheerleading Association
| Others |
| UCA | United Chinese Americans
| Others |
| UCA | United Christian Academy
| Others |
| UCA | United Computer Accessories
| Others |
| UCA | United Computer Associates
| Others |
| UCA | United Court of Austin, Inc.
| Others |
| UCA | Universal Cheerleader Association, Cheerleader Training Organization founded in 1974, (uca.varsity.com)
| Others |
| UCA | Universal Cheerleaders Association
| Others |
| UCA | Universal College Application
| Others |
| UCA | Universal College Applicaton
| Others |
| UCA | University Center for the Arts
| Others |
| UCA | University City Associates
| Others |
| UCA | University for the Creative Arts
| Others |
| UCA | University of Central Arkansas
| Others |
| UCA | University of Central Asia
| Others |
| UCA | University of Central Asia (Khorog, Tajikistan)
| Others |
| UCA | Unknown Chinese Artists
| Others |
| UCA | Upper Control Arm
| Others |
| UCA | Urban Core Area
| Others |
| UCA | Urgent Care Administrator
| Others |
| UCA | Used Car Awards
| Others |
| UCA | User Created Animal
| Others |
| UCA | Utah Chess Association
| Others |
| UCA | Utah Code Annotated
| Others |
| UCA | Utah Consolidated Application
| Others |
| UCA | Utah Corvette Association
| Others |
| UCA | Utica, New York USA
| Others |
| UCA | Utility Communication Architecture
| Others |
| UCA | Utility Communications Architecture
| Others |
| UCA | Utility Cost Adjustment
| Others |
| UCA | Uttarakhand Cultural Association, Canada
| Others |