MB stands as an abbreviation for:

  • Manitoba, a Canadian province
  • Turks and Caicos Islands by ICAO code
  • Mercedes-Benz, a German automobile brand
  • MB Spiele, US-American game and toy manufacturer, see Milton Bradley Company
  • MB Miðvágur, a Faroese football club from Miðvágur
  • MNG Airlines, Turkish cargo airline (IATA code)
  • Methyl bromide, a chemical compound
  • Motor Buggy Manufacturing Company, former US automobile manufacturer

Culture:

  • Maurizio Bianchi, as a pen name in his earlier publications.
  • Missal of the Catholic Church
  • Moritzbastei, part of the former city fortifications of Leipzig, today a cultural centre
  • Musica Britannica, a music-historical edition of works

Politics and Law:

  • Dunning order, see Dunning procedure
  • Marburger Bund, German professional association and trade union for medical professionals
  • Marching orders
  • Marxist Papers
  • Milton Bryan, cover name for a British department in World War II responsible for psychological warfare.
  • Ministerial Representative
  • Membership fee in the law of associations
  • Muslim Brotherhood, an Islamist movement

Technology:

  • Mainboard or motherboard, the motherboard
  • Mechanical Engineering
  • Megabyte (decimal prefix), abbreviation for 106 bytes = 1,000,000 bytes; see Byte#Prefixes
  • Molecular Beam
  • Moselbahn, a former railway company
  • Samoa Airlines, ICAO code of this former carrier

Numismatics:

  • Mintmaster's marks of the tipper mint in Großenhain 1621 and mintmarks of the tipper mint in Merseburg 1621 to 1622


MB as distinguishing sign on vehicle registration plates

  • Albania: Police (for Ministria Brendshme, Ministry of the Interior, with blue inscription)
  • Germany: County of Miesbach
  • Great Britain: Manchester
  • Italy: Monza e Brianza
  • Netherlands: Motorcycles
  • Slovakia: dealer's plate (white plate with red lettering: second group of letters)
  • Slovenia: Maribor
  • Czech Republic: Okres Mladá Boleslav (expiring)
  • Turkey: Foreigners with residence permit


mb is for:

  • Millibar, the thousandth part of the unit bar (unit) for pressure.


Mb is for:

  • Megabase pairs (also Mbp), as an abbreviation for 1,000,000 base pairs in molecular biology.
  • Megabit (decimal prefix), a less common abbreviation for 106 bits = 1 MBit or 1,000,000 bits; see bit.
  • Morbus, the Latin word for disease


mB or mb stands for:

  • Space wave magnitude scale, an earthquake scale