BSU

BSU may refer to:
 * Bangladesh Students Union, a political organization in Bangladesh
 * Baluchistan States Union, a province of Pakistan that existed from 1952 to 1955
 * Baptist Student Union
 * Behavioral Science Unit, the former name for the Federal Bureau of Investigation's Behavioral Analysis Unit
 * BISU Union, the Student Union of Beijing International Studies University (BISU)
 * British Seafarers' Union
 * Britannia Staff Union
 * Federal Bureau for Maritime Casualty Investigation (Bundesstelle für Seeunfalluntersuchung, BSU)
 * $$\operatorname{BSU}(n)$$, Classifying space for special unitary group
 * $$\operatorname{BSU}$$, Classifying space for infinite special unitary group

Universities
 * Baku State University
 * Ball State University, Indiana, USA
 * Batangas State University Apolinario R. Apacible School of Fisheries (BatSU)
 * Bath Spa University, UK
 * Beijing Sport University
 * Belarusian State University
 * Bemidji State University
 * Benguet State University (BengSU)
 * Boise State University, Idaho, USA
 * Bowie State University, Maryland, USA
 * Bukidnon State University (BukSU)
 * Bulacan State University (BulSU)
 * Bridgewater State University, Massachusetts, USA