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