CMB (disambiguation)

Last updated June 30, 2025

CMB is the cosmic microwave background, the thermal radiation left over from the time of recombination in Big Bang cosmology.

Science and technology

Core–mantle boundary, lying between the Earth's silicate mantle and its metallic outer core
Continuous marine broadcast, a type of radio station providing marine weather information to coastal areas of Canada

C.M.B. (manga), a detective fiction manga by Motohiro Katoui
CMB Televisión, a religious TV channel in Colombia
The Cosmic Microwave Background, the debut solo album of Shiny Joe Ryan
The Combine, the antagonistic alien empire from the Half-Life video game series

Cavalier Marching Band, marching band of the University of Virginia, US
Center for Mind and Brain, cognitive neuroscience research center at the University of California, US
China Medical Board, organization promoting medical education and research in China
China Merchants Bank, bank headquartered in Shenzhen, China
China Motor Bus, first motor bus company in Hong Kong
Compagnie Maritime Belge, one of the oldest ship-owners of Antwerp, Belgium
Compagnie Monégasque de Banque, private bank of Monaco
Compagnie des Machines Bull, French computer manufacturer
Union of the Belgian Metal Industry, trade union in Belgium

Bandaranaike International Airport (IATA code: CMB), an airport in Sri Lanka
Cambodia, UNDP country code
Cambridge North railway station, British railway station with station code CMB
Cash management bills, a form of security issued by the United States Treasury
Christus Mansionem Benedicat (English: May Christ Bless This House), text written in chalk on house doors on the day of Epiphany
Certified Mortgage Banker, a certification offered by the Mortgage Bankers Association
Coastal Motor Boat, torpedo boats built and used by Britain in both World Wars
Combat Medical Badge, a decoration of the United States Army