| Acronym | Definition |
|---|
| BSO➣Baltimore Symphony Orchestra |
| BSO➣Broward Sheriff's Office (Broward County, Florida) |
| BSO➣Boston Symphony Orchestra |
| BSO➣Bournemouth Symphony Orchestra (UK) |
| BSO➣Bicycle Shaped Object (design) |
| BSO➣Business Services Online (Social Security Administration) |
| BSO➣Beroepssecundair Onderwijs (Dutch) |
| BSO➣Bilateral Salpingo-Oophorectomy (surgical removal of both fallopian tubes and ovaries) |
| BSO➣Berliner Sinfonie Orchester (German: Berlin Symphony Orchestra) |
| BSO➣Banda Sonora Original (Spanish, soundtrack) |
| BSO➣British School of Osteopathy (London, UK) |
| BSO➣Broad System of Ordering (subject classification system) |
| BSO➣British Scouting Overseas (UK) |
| BSO➣Black September Organization (Palestinian Guerilla Group) |
| BSO➣Bulgarian Symphony Orchestra |
| BSO➣Berkeley Symphony Orchestra (Berkeley, CA, USA) |
| BSO➣Bismuth Silicon Oxide |
| BSO➣Basco, Philippines (Airport Code) |
| BSO➣Business Services Office (various locations) |
| BSO➣Border Services Officer (Canada Border Services Agency) |
| BSO➣Baloch Student Organization |
| BSO➣Bolton Symphony Orchestra (UK) |
| BSO➣Blues Society of the Ozarks (Springfield, MO) |
| BSO➣Branson School Online (Colorado) |
| BSO➣Black Students' Organization (Carroll College, Waukesha, Wisconsin USA) |
| BSO➣Budget Submitting Office |
| BSO➣Bright Shiny Object |
| BSO➣Bach Society Orchestra (various schools) |
| BSO➣Benzene-Soluble Organics |
| BSO➣Business Support Organization |
| BSO➣Brooklyn Symphony Orchestra (Brooklyn, NY) |
| BSO➣Basic Security Option |
| BSO➣Basingstoke Symphony Orchestra (Hampshire, UK) |
| BSO➣Banque Saint Olive (French bank) |
| BSO➣Building Safer Organisations (Humanitarian Accountability Partnership International) |
| BSO➣Boating Safety Officer |
| BSO➣Baytown Symphony Orchestra (Baytown, TX) |
| BSO➣Baggage Service Office |
| BSO➣Bremerton Symphony Orchestra (Bremerton, WA) |
| BSO➣Business System Owner |
| BSO➣Broward Symphony Orchestra (Ft. Lauderdale, FL) |
| BSO➣Base Supply Office |
| BSO➣Ballon Stratosphérique Ouvert (French: Open Stratospheric Balloon) |
| BSO➣Battalion/Brigade Signal Officer |
| BSO➣Broadband Switch Operations (Sprint) |
| BSO➣Battlespace Objective (US Army) |
| BSO➣Bookstore Officer (Church of Scientology) |
| BSO➣Brueckner Spin Orbital(s) |
| BSO➣Buyer Sign-Off |
| BSO➣Business Service Option(s) |
| BSO➣Ballistics Services Office (US DoD) |
| BSO➣Bristol Symphony Orchestra |