| Acronym | Definition |
|---|
| TCB | Taking Care of Business |
| TCB | Trusted Computing Base |
| TCB | Task Control Block |
| TCB | The Conference Board |
| TCB | Telecommunication Certification Body |
| TCB | Tetrachlorobenzene |
| TCB | Trouble Came Back (intermittent computer problem) |
| TCB | To Call Back |
| TCB | Tension Continuity Bias (graphics/animation) |
| TCB | Teatro Brasileiro de Comédia (Brazilian Theater of Comedy) |
| TCB | Tampere Convention Bureau (Finland) |
| TcB | The crazy Bandits (gaming clan) |
| TCB | Transfer Control Block |
| TCB | Thunder Canyon Brewery (Tucson, AZ) |
| TCB | Telephone Call Box (used by OS and other data sources in the UK) |
| TCB | The Candid Board (internet forum) |
| TCB | Terry College of Business (University of Georgia) |
| TCB | Test Control Board |
| TCB | Take Care, Baby |
| TCB | Tucson Concert Band (Tucson, AZ) |
| TCB | Thales Communications Belgium |
| TCB | Territorial Commissions Board (UK) |
| TCB | Turret Control Box (military aviation; helicopter) |
| TCB | Terminal Connection Box |
| TCB | Target Control System Bulletin |
| TCB | Test Certification Board |
| TCB | Test Connector Buffer |
| TCB | Timberlane Community Band (Plaistow, NH) |
| TCB | Tan Construction Boots |
| TCB | Telecommunications Control Board |
| TCB | Tri-County Band (Feasterville, PA) |
| TCB | Transcontinental Freight Bureau |
| TCB | Tennis Club de Beaumont (French: Beaumont Tennis Club; Tarn et Garonne, France) |
| TCB | Thermo-Compression Bonder (Palomar) |
| TCB | Transcontinental Flight Bureau |
| TCB | Thruster Controlled Breaking |
| TCB | Technische Commissie Voor de Bouw (Dutch: Technical Committee for Construction; Belgium) |
| TCB | Tulsa Community Band (Tulsa, OK) |
| TCB | Tennis Club Bressolles (Bressolles, France) |
| TCB | Topolino Car Belgium (automobile club; Belgium) |
| TCB | Transcutaneous Billirubin (pediatrics) |
| TCB | Tampa Community Band (Tampa, FL) |
| TCB | Thanet Concert Band (UK) |
| TCB | Toutes Constructions Bois (French: All Wood Construction; France) |
| TCB | The Community Builders (housing; various locations) |
| TCB | The Cooperative Bank (Roslindale, MA) |
| TCB | Technology Capacity Building |
| TCB | Terrace Community Band (Terrace, BC, Canada) |