BSO

BSO may refer to:

Science and medicine

 * Bilateral salpingo-oophorectomy, the surgical removal of both ovaries and both fallopian tubes
 * Barents Sea Opening, an gateway to the Arctic Ocean
 * British School of Osteopathy, the United Kingdom's oldest osteopathic institution
 * Bismuth silicon oxide, a chemical compound that has bismuth, silicon, and oxygen
 * Buthionine sulfoximine, a chemical substance inhibiting glutathione synthesis
 * Brain storm optimization algorithm
 * British Society of Otology, UK professional body
 * $$\operatorname{BSO}(n)$$, Classifying space for orthogonal group
 * $$\operatorname{BSO}$$, Classifying space for infinite orthogonal group

Music

 * Baltimore Symphony Orchestra, Maryland, United States
 * Beijing Symphony Orchestra, Beijing, China
 * Berliner Sinfonie Orchester, Berlin, Germany
 * Bloomington Symphony Orchestra (Minnesota), United States
 * Bilkent Symphony Orchestra, Ankara, Turkey
 * Birmingham Symphony Orchestra, England
 * Boston Symphony Orchestra, Massachusetts, United States
 * The Brian Setzer Orchestra, a United States band of the late 1990s swing revival
 * British Symphony Orchestra, the name of a number of symphonic ensembles since c1905
 * Bournemouth Symphony Orchestra, Poole, Dorset, England

Transport

 * Basco Airport, Batanes, Philippines
 * Basildon railway station, station code

Other uses

 * BSO, a European information technology company founded by Eckart Wintzen, now a part of Atos
 * Baloch Students Organization, Balochistan, Pakistan
 * Bank of Syria and Overseas, Syria
 * Basque Statistics Office
 * Bicycle shaped object, a cheaply produced, poor quality bicycle sold in mainstream stores
 * Basilian Salvatorian Order, a Catholic monastic community in Lebanon
 * Black September Organization, a Palestinian militant group
 * Brake Standard Open, a designation of British railway carriage
 * Broward County Sheriff's Office, Florida, USA
 * Österreichische Bundes-Sportorganisation, the Austrian Federal Sports Organization
 * Buso language, the language spoken by a tribe in western Chad, by ISO 639 designation