| Acronym | Definition |
|---|
| APSA➣American Political Science Association |
| APSA➣African Peace and Security Architecture (African Union) |
| APSA➣Airline Pilots' Security Alliance |
| APSA➣American Pediatric Surgical Association |
| APSA➣Asia Pacific Screen Academy (Australia) |
| APSA➣Arizona Private School Association (Phoenix, AZ) |
| APSA➣Advanced Photovoltaic Solar Array |
| APSA➣Asia and Pacific Seed Association |
| APSA➣Above Ground Petroleum Storage Act (California) |
| APSA➣ASEAN Petroleum Security Agreement |
| APSA➣American Planning Student Association (California) |
| APSA➣Asian Pacific Student Association |
| APSA➣A Production Sharing Agreement (resource contract) |
| APSA➣Australian Peak Shippers Association |
| APSA➣Asian Pacific Student Alliance |
| APSA➣Automotive Parts & Services Association (Austin, TX) |
| APSA➣Automotive Parts and Service Alliance (formerly Automotive Aftermarket Industry Association and the Automotive Warehouse Distributors Association) |
| APSA➣Aerospace Professional Staff Association |
| APSA➣Adult Protective Services Act |
| APSA➣American Polypay Sheep Association |
| APSA➣Ammunition Procurement Supply Agency |
| APSA➣Analysis of Product Support Alternatives (US Army) |
| APSA➣Animal Protection Society Albox (Almería, Spain) |
| APSA➣Aceros Prefabricados Sociedad Anónima (Spanish, Guatemala) |
| APSA➣Australian Professional Selling Association |