| Acronym | Definition |
|---|
| BSR | Business for Social Responsibility |
| BSR | Bootstrap Router (networking) |
| BSR | Bonsoir (French) |
| BSR | British Society for Rheumatology |
| BSR | Baltic Sea Region |
| BSR | Brevet de Sécurité Routière (French) |
| BSR | Bottom-Simulating Reflector (Geophysics) |
| BSR | Berliner Stadtreinigung (German: Berlin Sanitation; Germany) |
| BSR | Board of Standards Review (ANSI term) |
| BSR | Bit Scan Reverse |
| BSR | British Society of Rheology |
| BSR | Boundary Scan Register |
| BSR | Basic Semantic Repository |
| BSR | Behavioral and Social Research |
| BSR | Business Strategy Review |
| BSR | Blue Sky Research (Milpitas, CA) |
| BSR | Buzz, Squeak and Rattle (automotive) |
| BSR | Blood Sedimentation Rate |
| BSR | Best Service Routing |
| BSR | Black Squirrel Radio (Kent State University) |
| BSR | Broad Street Run (10-mile race; Philadelphia, PA) |
| BSR | Brigade Spéciale de Recherche (French: Special Research Brigade; Belgium) |
| BSR | Business Service Representative |
| BSR | Basal Skin Resistance |
| BSR | Bulk Shielding Reactor |
| BSR | Basic Statistical Return (finance) |
| BSR | Guine Bissau Airlines (ICAO code) |
| BSR | Biotech Stock Research, LLC (independent research firm) |
| BSR | Bankers' Selling Rate (airlines) |
| BSR | Biomasse du Stock Reproducteur (French: spawning-stock biomass, fisheries) |
| BSR | Baltic Ship Repairers (Estonia; now BLRT) |
| BSR | Birmingham Sound Reproducers (British stereo equipment manufacturer) |
| BSR | Brainstem-Evoked Response |
| BSR | Business Sales Representative |
| BSR | Back Surface Reflection |
| BSR | bending strength ratio (ratio of box member strength to pin member strength) |
| BSR | Basic System Release |
| BSR | Bite Status Register (NASA) |
| BSR | Bretagne Soubassement Réseaux (French: Brittany Bedrock Networks; Brittany, France) |
| BSR | Byte Status Register |
| BSR | Back Scatter Ratio |
| BSR | Banking Service Representative |
| BSR | Biweekly Schedules Reviews |
| BSR | Base Spares Report |
| BSR | Base Support Radio |
| BSR | Business Strategy Report |
| BSR | Barker Sequence Repetition |
| BSR | Block Shear Rupture |
| BSR | Beavon Sulfur Removal |
| BSR | Broadcast Seeded Rice |
| BSR | Bulbar Synchronizing Region |
| BSR | Bit Slippage Rate |
| BSR | Business System Requirement |
| BSR | Budget System of Record |
| BSR | Buffered Sense Return |
| BSR | Basra Iraq International Airport (airport code) |
| BSR | Balkan Society of Radiology |
| BSR | Barrett Sniper Rifle (US Army) |
| BSR | Burster Size Reduction (hazardous waste, machine to cut projectile bursters prior to incineration) |
| BSR | Basic Scientific Research (India) |
| BSR | Business Secure Router (computing) |
| BSR | Bitume Slot Racing (France) |
| BSR | Bâtiment de Soutien de Région (French: Regional Support Vessel) |
| BSR | Beneficiary Service Representative (US DoD) |
| BSR | Base Station Repeater (telecommunications) |