| Acronym | Definition |
|---|
| ACSA | Acquisition and Cross-Servicing Agreement (Japan-US) |
| ACSA | Acquisition Cross-Service Agreement |
| ACSA | Agencia Centroamericana de Seguridad Aeronáutica (Central American Agency for Aviation Safety) |
| ACSA | Aggravated Criminal Sexual Assault |
| ACSA | Allied Communications Security Agency (NATO) |
| ACSA | Army Communications Satellite Agency |
| ACSA | Army of the Confederate States of America (est. 1861) |
| ACSA | Association of Consulting Surveyors Australia |
| ACSA | Augusta County Service Authority |