TCB may refer to:
- TCB (TV program), a 1968 Motown television special
- TCB Band, Elvis Presley's band
- TCB, an acronym for "taking care of business", used in the Seinfeld episode "The Bizarro Jerry"
- Telephone booth, TCB, the abbreviation used on large-scale Ordnance Survey maps for a telephone call box
- Kochanek–Bartels splines, sometimes called TCB splines, the acronym referring to tension, continuity, and bias
- T.C. Boyle, author.
- Telecommunication Certification Body, TCB, an accredited organization which has the authority to issue Grants of Certification for compliance with Federal Communications Commission(FCC) rules and regulations.
Read more about Tcb: Organizations, Science & Technology