BMI may refer to:
Companies and organizations
- BMI Foundation, founded by Broadcast Music Incorporated
- BMI Healthcare, UK
- BMI Film & TV Awards
- BMI Research, a research firm
- Flybmi airline, formerly BMI Regional and a BMI mainline subsidiary
- Bmibaby.com, former airline, BMI subsidiary
- British Midland International, a UK airline incorporated into BA
- Baltimore Museum of Industry
- Bank of Makati, a Philippine bank
- Bank Melli Iran, the first national Iranian bank
- Best Motoring International, a Japanese magazine
- Birmingham and Midland Institute, England
- Broadcast Music, Inc., a collecting society for composers' copyrights
- Bundesministerium des Innern, the German Federal Ministry of the Interior
- Bureau of Military Information, US Civil War agency
Other
- Body mass index of weight in relation to height
- BMI Awards, annual award ceremonies for songwriters
- Bit Manipulation Instruction Sets for x86 microprocessors
- Brain Machine Interface
- Central Illinois Regional Airport, IATA code
- Big Mac Index