| Acronym | Definition |
|---|
| BMSA | Board on Mathematical Sciences and Their Applications (National Academy of Sciences) |
| BMSA | Bahrain Maritime Sports Association |
| BMSA | Bahrain Mind Sports Association |
| BMSA | Bermuda Masters Swimming Association |
| BMSA | Boston Medical and Scientific Advisors, LLC |
| BMSA | Brown Muslim Students' Association (Brown University) |
| BMSA | Blue Marsh Sailing Association |
| BMSA | British Medical Students Association |
| BMSA | Board of Multicultural Student Affairs |
| BMSA | Brandeis Muslim Student Association |
| BMSA | Bangladesh Master Stevedores Association |
| BMSA | Buckeye Mini Sprint Association (Waynesfield, OH) |
| BMSA | Brantford Minor Softball Association (Ontario, Canada) |
| BMSA | Biomedical Science Association |
| BMSA | Baptist Mission of South Africa |
| BMSA | Basic Music Skills Assessment |
| BMSA | Beaver Mountain Ski Area (Utah) |
| BMSA | Board of Mathematical Sciences and Applications |
| BMSA | Burst Mode Saturation Analyzer |
| BMSA | Bodega Marine Science Association (Bodega Bay, CA) |
| BMSA | Biomedical Systems Analysis |
| BMSA | Bahrain Maritime Sailing Association |
| BMSA | Berlin Missionary Society Archives |
| BMSA | Bridgeton Main Street Association (Bridgeton, NJ) |
| BMSA | Bangladesh Marine Science Association |
| BMSA | Birmingham Metropolitan Statistical Area |
| BMSA | Bureau of Medical Systems Administration |
| BMSA | Business Management South America |
| BMSA | Banco Multiplic SA |
| BMSA | Best Mean Square Approximation |
| BMSA | Breach of Marine Safety Act (Australia) |
| BMSA | Seaman Apprentice, Boatswain's Mate Striker (Naval Rating) |