| Acronym | Definition |
|---|
| BASA | Banco da Amazônia SA (Amazônia Bank, Brazil) |
| BASA | Black and Asian Studies Association (est. 1991) |
| BASA | Bilateral Aviation Safety Agreement (FAA) |
| BASA | Banking Association South Africa |
| BASA | Buckeye Association of School Administrators (Ohio) |
| BASA | British Adhesives and Sealants Association |
| BASA | British Automatic Sprinkler Association (England) |
| BASA | Bay Area Soaring Associates (Sunnyvale, California) |
| BASA | Bermuda Amateur Swimming Association |
| BASA | Business & Arts South Africa |
| BASA | Bulgarian Alarm Systems Association |
| BASA | Business Administration Students' Association (University of Winnipeg, Winnipeg, Manitoba, Canada) |
| BASA | British Association of Seed Analysts |
| BASA | Business Aviation School of Aeronautics |
| BASA | Batch Install Stand-Alone System (Sprint) |
