| Acronym | Definition |
|---|
| USCA | University of South Carolina Aiken |
| USCA | US Code Annotated (laws) |
| USCA | United States Court of Appeals |
| USCA | United States Curling Association |
| USCA | United States Code Annotated |
| USCA | United States Conference on AIDS |
| USCA | United States Copyright Act |
| USCA | United States Croquet Association |
| USCA | United States Canoe Association |
| USCA | University Students' Cooperative Association |
| USCA | United Sidecar Association (motorcyclists) |
| USCA | Union Sindical de Controladores Aereos (Spanish: Air Traffic Controllers Labor Union; Spain) |
| USCA | United States Contractors Association |
| USCA | US Canola Association |
| USCA | Ultrasound Contrast Agent (imaging) |
| USCA | United States Cavalry Association |
| USCA | United States Carrom Association |
| USCA | United States Champion Association |