| Acronym | Definition |
|---|
| USACA | United States of America Cricket Association |
| USACA | United States Advanced Ceramics Association |
| USACA | Universidad Santiago de Cali (Spanish) |
| USACA | United States Air Consolidators Association |
| USACA | University Students AIDS Control Association (University of Nairobi) |
| USACA | United States A-Class Catamaran Association |
| USACA | US Allied Commission for Austria |
| USACA | United States Army Correctional Activity |
| USACA | Utah School Age Care Alliance |
| USACA | United Support Against Communism in the Americas |
| USACA | Undergraduate Scholarly and Creative Activities |
| USACA | Union Santiago Apostol de Cagueyeros Ausentes (Spanish) |