CB and variants may refer to:
Places CB postcode area or Cambridge postcode area, England Cambodia (LOC MARC code, obsolete FIPS Pub 10-4 country code and obsolete NATO digram CB) Centura București, a ring road of Bucharest, Romania Colegio Bolivar, an American school in Cali, Colombia Province of Campobasso, Italy
People Chris Brown (born 1989), American R&B singer Henry Campbell-Bannerman (1836–1908), British prime minister 1906–1908, known as CB
Brands and enterprises Carte Bancaire, a bank card brand Chaturbate, a pornographic webcam website Christianssands Bryggeri, a Norwegian brewery ScotAirways (IATA airline code CB)
Science and technology Computing and telecommunications Cell Broadcast, in GSM mobile networks Citizens band radio (CB radio), short-distance radio
Other uses in science and technology Columbium (Cb), an obsolete name for the element niobium Cumulonimbus cloud (Cb), a type of cloud
Sea vessels CB-class midget submarine, WWII, Italy Block coefficient (Cb), a parameter describing the shape of a ship's hull A retired US Navy hull classification symbol: Large cruiser (CB)
Sports Positions Cornerback, a position in American football Centre-back, a defender position in Association football
Titles Companion of the Order of the Bath, British honour
Other uses CB, dominical letter for a leap year starting on Friday Construction Battalion (CB or "Seabee"), a US Navy engineering unit
See also
C♭ (musical note) C♭ major C-flat minor