| Acronym | Definition |
|---|
| TB | Tuberculosis |
| TB | Terabyte (1,024 Gigabytes) |
| TB | Tampa Bay (Florida) |
| TB | Thunderbird |
| TB | Textbook |
| TB | Total Bases (baseball) |
| TB | También (Spanish: Also or As Well) |
| TB | Também (Brazil: tuberculosis) |
| TB | Too Bad |
| TB | Taschenbuch (German: Paperback) |
| TB | Teddy Bear |
| TB | Thoroughbred |
| TB | Trillion Bytes |
| TB | Travel Bug (geocaching) |
| TB | The Beatles (music album) |
| Tb | Tuba |
| TB | Turbulence |
| TB | Tony Blair |
| TB | Trombone |
| TB | Très Bien (French: Very Good) |
| TB | Taco Bell |
| TB | Talk Back |
| TB | Technical Bulletin |
| TB | Brightness Temperature |
| TB | True Blood (TV show) |
| TB | Terbium |
| TB | Tee Box |
| TB | Treasury Board |
| TB | Tailback (football) |
| TB | Thai Baht (currency) |
| TB | Taskbar |
| TB | Total Body |
| TB | Treasury Bond |
| TB | Toronto Bluejays |
| TB | Terminal Block |
| TB | Tim Burton (actor) |
| TB | Twin Brother |
| TB | Throttle Body |
| TB | Turn Based (RPG, gaming) |
| TB | Test Bed |
| TB | Tubercle Bacillus (tuberculosis) |
| TB | Time Base |
| Tb | Terabit (1,024 Gigabits; written with a lowercase b) |
| TB | Tight Binding |
| TB | Temporal Bone |
| TB | Two-Bits |
| TB | Treasury Bill |
| TB | Twin Bed |
| TB | True Basic |
| TB | Teen Baby |
| TB | Tennis Ball |
| TB | Tank Battalion |
| TB | Trial Balance (accounting) |
| TB | Token Bucket (algorithm) |
| TB | Tea Bag |
| TB | Touch Base |
| TB | Thunderball (James Bond film) |
| TB | Text Back (text messaging) |
| TB | TheBrain (website) |
| TB | Time Bandits (movie) |
| TB | The Bouncer (video game) |
| TB | Title-Block |
| TB | Title Block (AutoCAD) |
| TB | Technical Body |
| TB | Thrust Bearing |
| TB | Terbio (Spanish) |
| TB | Terminal Board |
| TB | Tenor Bass (chorus) |
| TB | The Barrens (gaming, World of Warcraft) |
| TB | Thunder Bluff (Warcraft game) |
| TB | Technology Base |
| Tb | Tatbestand (Austria, Europe) |
| TB | Tsunami Bomb (band) |
| TB | Torsion Bar |
| TB | Tom Boy |
| TB | Total Biomass (yield) |
| TB | Terminal Box |
| TB | Team Battle |
| TB | Triple-Buffering |
| TB | True Bearing |
| TB | Transaction Broker (real estate) |
| TB | Tsar Bomba (50 megaton nuclear bomb) |
| TB | Torrentbytes.net |
| TB | The Bretheren |
| TB | Torch Brazing |
| TB | Transport Bureau (Hong Kong) |
| TB | Trip Blank (sample submitted to see if cross-contamination has occurred) |
| TB | Tina Barrett (musician) |
| TB | Tip Ball |
| TB | Turbine Building |
| TB | Towed Body |
| TB | Terminal Ballistics |
| TB | Thumb Bolt (plumbing) |
| TB | Trogdor the Burninator (cartoon, Homestar Runner) |
| TB | Thrift Bank |
| TB | Target Benefit (DC pension plan) |
| TB | Thomas Biskup (author of computer game ADOM) |
| TB | Tedlar Bag |
| TB | Turbo Block |
| TB | Thought Blocking |
| TB | Troop Basis |
| TB | Tracking Balance |
| TB | Tooling Ball |
| TB | Tele-Block (Runescape spell) |
| TB | Tangential Bound |
| TB | Tom-Tom Beater (Mic-O-Say, Heart of America Council, Boy Scouts of America) |
| TB | Thermal Bake |
| TB | ThoughtBridge |
| TB | Weighted Mean Body Temperature |
| TB | True Brittanians (game) |
| TB | Total Blockout |
| TB | Three-way Box |