| Acronym | Definition |
|---|
| TBI | Traumatic Brain Injury |
| TBI | Tennessee Bureau of Investigation |
| TBI | Total Body Irradiation |
| TBI | Tableau Blanc Interactif (French: Interactive Whiteboard; France) |
| TBI | Tick-Borne Illness |
| TBI | Throttle Body Injection |
| TBI | Television Business International (various locations) |
| TBI | To Be Implemented |
| TBI | To Be Inserted |
| TBI | Temple Beth Israel |
| TBI | Trade Bank of Iraq |
| TBI | Telebermuda International |
| TBI | Time Between Intervention (engineering) |
| TBI | To Be Ignored |
| TBI | Tissue Banks International (international network of eye and tissue banks) |
| TBI | Ten Bit Interface |
| TBI | The British Institute |
| TBI | Trans-Border Institute (University of San Diego) |
| TBI | The Biotechnology Initiative (now Life Sciences Ontario; Ontario, Canada) |
| TBI | Trucker Buddy International (Tuscaloosa, AL) |
| TBI | The Baseball Index (est. 1900; resource) |
| TBI | The Biomimicry Institute (Missoula, MT) |
| TBI | Technology Builders, Inc. |
| TBI | The Bethlehem Institute (Minneapolis, MN) |
| TBI | Total Business Integration |
| TBI | Touraine Berry Immobilier (French: Touraine Berry Real Estate; France) |
| TBI | Texas Bible Institute (Columbus, Texas) |
| TBI | Through Bulkhead Initiator |
| TBI | To Be Inactivated |
| TBI | Thomson Business Information |
| TBI | Turbo Benzina Injection (Italian: Gasoline Turbo Injection; Alfa Roméo; Italy) |
| TBI | Target Bearing Indicator |
| TBI | Test Bench Installation |
| TBI | Tooth Brushing Instructions |
| TBI | Test Buffer Index |
| TBI | Throttle Body Injection/Injected (engine) |
| TBI | Technology Business Integration |
| TBI | Threaded Blind Insert |
| TBI | Timebase Interactive |
| TBI | Triple Beam Illumination |
| TBI | Time Based Image |
| TBI | Test Bearing Indicator |
| TBI | Truth by Intimidation |