| Acronym | Definition |
|---|
| BSG | Battlestar Galactica |
| BSG | Bible Study Guide (reference book) |
| BSG | Big Stone Gap (Virginia) |
| BSG | British Society of Gastroenterology (London, UK) |
| BSG | Bay St. George (Canada) |
| BSG | Basigin |
| BSG | Bipolar Support Group (mental health) |
| BSG | Black Sheep Gathering (Eugene, OR) |
| BSG | Battlestar Group (fictional, Battlestar Galactica) |
| BSG | Brunswick Street Gallery (Australia) |
| BSG | Badger State Games (Wisonsin) |
| BSG | Building Services Group (various locations) |
| BSG | Branch Segment |
| BSG | Business Systems Group |
| BSG | Business Solutions Group |
| BSG | Big Silly Grin |
| BSG | British Sitcom Guide (website; UK) |
| BSG | Broadband Stakeholder Group (UK) |
| BSG | Brillstein Security Group (Beaverton, OR) |
| BSG | Basic Service Group (German tourism enterprise) |
| BSG | Bear Specialist Group (various organizations) |
| BSG | Bibliothèque Sainte-Geneviève (French library) |
| BSG | Below Surface Grade |
| BSG | Bearer Service Group (mobile telecommunication) |
| BSG | Business Services Gateway (Nortel) |
| BSG | Bulk Specific Gravity |
| BSG | Brain Stem Glioma |
| BSG | Bournemouth School for Girls (Dorset, UK) |
| BSG | Big Smiling Grin |
| BSG | Boulder Snowboarding Group (Colorado) |
| BSG | Berkeley Scott Group (UK) |
| BSG | Brotherhood of St Gregory |
| BSG | BOINC (Berkeley Open Infrastructure for Network Computing) Simple GUI (Graphical User Interface) (distributed computing program) |
| BSG | Backstop Solutions Group LLC |
| BSG | Bürger-Schützen-Gesellschaft (Göttingen, Germany sporting club) |
| BSG | Broad Sweeping Generalisation |
| BSG | Bird Study Group |
| BSG | Bombsquadgolf (golf website) |
| BSG | Big Sad Grin |
| BSG | Boron-Silicate Glass |
| BSG | Base Spares Group |
| BSG | Building Safety Group Ltd (UK) |
| BSG | Behavioural Sciences Group |
| BSG | British Standard Gauge |
| BSG | Bike Shop Guy |
| BSG | Bibliothèque de Santé Génésique (French: Reproductive Health Library; electronic journal) |
| BSG | Boon Siew Group |
| BSG | Brachioskeletogenital Syndrome |
| BSG | Beyond Skin Global |
| BSG | Bye Sweet Girl |
| BSG | Bye Sweet Guy |
| BSG | Bureau Social de Gitarama (French) |
| BSG | Big Soft Glossy (magazine genre) |