MBR

MBR may refer to:

• Minerações Brasileiras Reunidas, a division of Caemi
• Malaysian Book of Records
• Master boot record, the first sector of a partitioned data storage device, used for booting
• Membrane bioreactor
• Main Battle Rifle
• Memory buffer register
• Microwave background radiation
• Middlesbrough railway station (National Rail station code: MBR), a station in England
• Minimum bounding rectangle
• Morskoi Blizhniy Razvedchik, Russian for "Naval Short Range Reconnaissance", a class of flying boats, like the Beriev MBR-2
• Movimiento Bolivariano Revolucionario 200 or MBR-200, a leftist political movement founded by Hugo Chavez in Venezuela.