BST, Bst or bst may refer to:

• Bangladesh Standard Time, the time zone of Bangladesh, at UTC+6:00
• Bering Standard Time, a former timezone of Alaska, at UTC−11:00
• British Summer Time, the daylight saving time zone for the United Kingdom, at UTC+1:00
• Burma Standard Time, the standard time zone for Myanmar (Burma), at UTC+6:30

• Biochemical Society Transactions, journal of the Biochemical Society
• Bacillus stearothermophilus, nowadays called Geobacillus stearothermophilus, a species of bacterium
• Barium strontium titanate
• Baumann Skin Types, a skin-type classification system
• Binary search tree, a data structure
• Biochemical systems theory, a mathematical modelling framework
• Bituminous surface treatment, a sealing coat for pavements
• Bone marrow stromal antigen, a lipid raft associated protein
• Bovine somatotropin, a type of growth hormone

• Badger State Trail
• Banks–Vernonia State Trail, a paved rail trail and state park in northwest Oregon
• Bass Strait Triangle

• Bengal School of Technology, a private pharmacy college located in Chinsurah, Hooghly district, India
• Brisbane School of Theology, a bible college in Toowong, Brisbane, Queensland
• British School of Tenerife, a British international school in Tenerife, Spain
• British School Tripoli, a British international school in Tripoli, Libya
• The British School in Tokyo, an international school in central Tokyo

• IATA airport code of Bost Airport, an airport along the Helmand River in Afghanistan
• Bangalore Suburban Transport, the older name for the Bangalore Metropolitan Transport Corporation
• Batik Solo Trans, a bus rapid transit in Indonesia
• Transportation Safety Board of Canada (Bureau de la sécurité des transports du Canada)
• Bombardier Sifang Transportation Ltd., a Chinese manufacturer of MUs in the railway industry

• Brigade spécialisée de terrain, a police unit of the Central Directorate of Public Security in France
• Basic Safety Training, training in basic firefighting, survival, safety, and first aid
• Bavarian–Austrian Salt Treaty, European treaty
• Bilal Satellite Television, an Islamic media production in Ethiopia
• Blood, Sweat & Tears, American jazz-rock group
• British Summer Time (concerts), an annual music festival held in Hyde Park, London
• Broom Street Theater, an experimental theater in Madison, Wisconsin
• Browser-side templating, a templating strategy for web applications
• .bst, a filename extension for BibTeX style files