BMG may refer to:

• .50 BMG, a cartridge developed for the Browning .50 caliber machine gun in the late 1910s
• BMG (banjo, mandolin, and guitar), a magazine, founded in 1903 by Clifford Essex (1869–19??) of London, England
• Bank Mendes Gans, a Dutch bank, founded in 1883 and located in the centre of Amsterdam
• Bertelsmann Music Group, a division of Bertelsmann before the sale of its assets on October 1, 2008, see also BMG Rights Management
• Beth Medrash Govoha, a Haredi yeshiva in Lakewood Township, New Jersey
• Bill & Melinda Gates Foundation, the largest transparently operated private foundation in the world
• Blue Man Group, a creative organization that produces theatrical shows and concerts featuring music, comedy and multimedia
• Borussia Mönchengladbach, a German football club based in Mönchengladbach, North Rhine-Westphalia
• Bulk metallic glasses, a type of amorphous metal
• Indonesian Agency for Meteorology, Climatology and Geophysics (previously Badan Meteorologi dan Geofisika), the Indonesian non-departmental government agency for meteorology, climatology, and geophysics
• Monroe County Airport (Indiana) (IATA code: BMG), a county-owned public-use airport
• Red Army Faction (previously Baader-Meinhof Group), one of post–World War 2 Germany's most violent and prominent left wing groups

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