BMA

• Baltimore Museum of Art
• Billboard Music Awards
• Black Market Activities, a record label
• Black Movie Award, annual ceremony
• BMA Magazine, a music magazine published in Canberra, Australia
• Borderless Military Alliance, a fictional organization in the Rideback manga and anime

• Battery Manufacturing Association, a British automobile manufacturer
• BermudAir, airline in Bermuda (ICAO airline code)
• BHP Mitsubishi Alliance, Australian mining company
• Black Market Activities, a record label
• British Manufacturers' Association, a former employers' association
• British Midland International, defunct airline in the United Kingdom (ICAO airline code)
• Broaden Media Academy, a film and video training facility in Taipei, Taiwan
• Stockholm Bromma Airport (IATA code BMA)

Trades Unions

• British Medical Association

• Bahamas Maritime Authority
• Bangladesh Military Academy
• Bangkok Metropolitan Administration
• Bermuda Militia Artillery, former unit
• Bermuda Monetary Authority
• British Military Administration (disambiguation) (various meanings)

• Baptist Missionary Association of America, an association of churches in the United States
• Biblical Mennonite Alliance

• β-Methylamphetamine, a stimulant
• Bayesian model averaging, an ensemble learning method
• Blind mate connector, an RF connector type
• Block-matching algorithm, a system used in computer graphics applications
• B-segment Modular Architecture platform, a modular car platform developed by Geely