TCB may refer to:
Companies and organizations Taiwan Cooperative Bank, a bank of Taiwan The Conference Board, a non-profit business membership and research group organization in New York City Touring Club Belgium, a motoring organization in Belgium Transportes Charter do Brasil, a cargo airline in São Paulo, Brazil
Computing Task Control Block, an instance of a process control block within IBM OS/360 and successor systems Thread control block, a data structure in the operating system kernel Trusted computing base, a set of computer components critical to its security Temenos Core Banking, banking software from Temenos Group Transmission Control Block, a data structure used by a Transmission Control Protocol stack
Music TCB (album), James Reyne's album of Elvis Presley cover songs TCB (band), an early 1970s Canadian rock group TCB Band, rhythm section of Elvis Presley's band
Science TCB-2, a hallucinogenic phenethylamine compound Trichlorobenzene, an organic chemical Temps-Coordonnée Barycentrique (Barycentric Coordinate Time), a coordinate time standard in astronomy TCB meter (transcutaneous bilirubin meter), a device which measures bilirubin level
Other TCB (TV program), 1968 Motown television special and album TCB, IATA code for Treasure Cay Airport in The Bahamas TCB, NYSE symbol for TCF Financial Corporation TCB, Ordnance Survey map code for a telephone call box TCB spline ("tension, continuity, and bias"), in mathematics, another term for a Kochanek–Bartels spline Telecommunication Certification Body, compliance agency re Federal Communications Commission (FCC) rules and regulations Track circuit block, name used in the United Kingdom for automatic block signalling on railways
See also Taking Care of Business (disambiguation) Telephone Company Building (disambiguation)