| Acronym | Definition |
|---|
| TBT | Throwback Thursday |
| TBT | Tampa Bay Times (Tampa Bay, FL) |
| TBT | Technical Barriers to Trade |
| TBT | Today's Big Thing |
| TBT | Turn Back Time |
| TBT | Trampled by Turtles (band) |
| TBT | The Butterfly Tattoo (film) |
| TBT | Tom Brown Tracker (wilderness; Manahawkin, NJ) |
| TBT | Travel by Train (Europe) |
| TBT | Temple Beth Torah (various locations) |
| TBT | Triple Base Technology (snowboards) |
| TBT | the Big Three |
| TBT | Total Body Trainer (exercise equipment) |
| TBT | To Be Tested |
| TBT | Tow Bowl Tactics (game) |
| TBT | The Bible Translator (journal) |
| TBT | Turquoise Biomedical Technologies (UK) |
| TBT | Turn-By-Turn |
| TBT | Technology Based Training |
| TBT | Twisted Brown Trucker (band) |
| TBT | Tributylin |
| TBT | Truth Be Told |
| TBT | Time Based Text (computer project) |
| TBT | Très Basse Tension (French: very low voltage) |
| TBT | Through Bore Tree (energy exploration) |
| TBT | Tropical Bont Tick (parasite) |
| TBT | Temple Beth Tikvah (Fullerton, California synagogue) |
| TBT | Tabatinga, Amazonas, Brazil (Airport Code) |
| TBT | Tool Box Talk (safety talk) |
| TBT | Tampa Bay Technical High School (Florida) |
| TBT | Total Bottom Time (SCUBA diving) |
| TBT | Transcontinental Bluebird Trail |
| TBT | Thunder Bay Television |
| TBT | Tetrabutyl Titanate |
| TBT | That Bouncy Thing |
| TBT | The Bell Tree (Nintendo game) |
| TBT | Toshiba Bravethunders (sports team; Japan) |
| TBT | Turn-Based Tactics (gaming) |
| TBT | Très Basse Température (French: very low temperature) |
| TBT | Tail-Biting Trellis (code) |
| TBT | Telemarketing and Business Telecommunications (convention) |
| TBT | Tetrabutoxytitanium |
| TBT | Turbine Blade Temperature |
| TBT | Total Body Temperature |
| TBT | Transformation-Based Tagger |
| TBT | Task-Based Training |
| TBT | Technical Bid Tabulation (engineering) |
| TBT | Team-Based Training |
| TBT | Taco Bell Tuesday |