BM or bm may refer to:
Music
BM (rapper), born Matthew Kim, a Korean-American rapper
BM (singer), a Congolese-born, British singer-songwriter, dancer, director and record producer
BM (album), a 2008 Barbara Morgenstern album
B minor, a musical chord (Bm)
Bachelor of Music, an academic degree
Beautiful music, a radio format
Black metal, a genre of music
Other uses in arts and entertainment
Bashir Mirza, a Pakistani painter
BM or "Bad Manners" in video gaming, cf. glossary of video game terms#BM
Business terminology
Brick and mortar or B&M
Businesses
BM, reporting mark of Boston and Maine Railroad, a former American railway company
BM, IATA code of several airlines, at different times:
Bakhtar Afghan Airlines, based in Afghanistan
Flybmi (formerly BMI Regional), based in the United Kingdom
Medsky Airways, a Libya-based airline
Birmingham Midshires, a division of the Bank of Scotland
Bolinder-Munktell, a Swedish tractor manufacturer, now part of Volvo
Bolliger & Mabillard, a Swiss roller coaster manufacturer
British Midland International, a former airline in the United Kingdom
Health and medicine
Bachelor of Medicine, an academic degree
Basement membrane
Boehringer Mannheim test, a blood test performed using a glucose meter
Bowel movement
Other uses in science and technology.bm, Bermuda Internet top-level domain
Builder's Measurement or Builder's Old Measurement of ship size (18th and 19th century)
Language
Bambara language (ISO 639-1: bm), a West African language
Malaysian language, or Bahasa Malaysia
Military
Bandmaster in the British Army and Royal Marines
Boatswain's mate (United States Navy)
Boatswain's mate (United States Coast Guard)
Bravery Medal (Australia)
Brigade major in the British Army and Commonwealth armies
Martin BM, a United States Navy torpedo-bomber aircraft
A US Navy hull classification symbol: Monitor (BM)
Places
Bermuda (ISO 3166-1 2-letter country code).bm, the Internet country code top-level domain for Bermuda
Birch Mountain, location of Birch Mountains kimberlite field, Alberta, Canada
Burma (FIPS Pub 10-4 code and obsolete NATO country code)
Bukit Merah, Singapore
The British Museum, London
Other uses
British Movement, a British fascist group
Riau (vehicle registration prefix BM)