| Acronym | Definition |
|---|
| TG | The Great (band) |
| TG | The Game (online game) |
| TG | Top Gear (British car show) |
| TG | Glass Transition Temperature |
| TG | Togo (top level domain) |
| TG | Transgender |
| TG | Task Group |
| TG | The Gathering |
| TG | The Garden (Guns N' Roses song) |
| TG | Top Gun (movie) |
| TG | Transgendered |
| TG | Thank God |
| TG | Thanksgiving |
| TG | Thai Airways International |
| TG | Thurgau (Thurgovie; Swiss Canton) |
| TG | The Gap |
| Tg | Transgenic |
| TG | ThinkGeek (website) |
| TG | Triglyceride |
| TG | Top Girls (play by Caryl Churchill) |
| TG | Technical Guide |
| TG | Too Good |
| Tg | Thyroglobulin |
| TG | That's Great |
| TG | Thai Airways International (IATA Airport Code) |
| TG | TurboGrafx |
| TG | Tagesgeld (German) |
| TG | Third Grade |
| TG | Throbbing Gristle (1970s band) |
| TG | Target Group |
| TG | Trigun (TV show) |
| TG | Thermogravimetry (mass change study) |
| TG | Terry Gilliam (director) |
| TG | Tiefgarage (German: underground parking) |
| TG | Touch-and-Go |
| TG | Temperature Gradient |
| TG | Topical Guide |
| TG | Turbine Generator |
| TG | Talkgroup |
| TG | Technical Group |
| TG | Tail Gunner |
| Tg | Teragram (metric unit of mass) |
| TG | Total Guitar (magazine) |
| TG | Trunk Group |
| TG | Tactical Gamer (online community) |
| TG | Ta Gueule (French: Shut Up) |
| TG | True Good (gaming) |
| TG | Titan's Grip (World of Warcraft) |
| TG | Trésorerie Générale (French: General Treasury) |
| TG | Transmission Group |
| TG | Transformational Grammar |
| TG | Timing Generator |
| TG | Transfer Guide (Maricopa County, AZ community college system) |
| TG | Transformational-Generative (grammar) |
| TG | Trinidad Guardian (Newspaper) |
| TG | Timeless-Games.com (German software development company) |
| TG | Togdheer (postal region, Somalia) |
| TG | Taux de Gravité (French: Severity Rate) |
| TG | Tail Gating |
| TG | Trunking Gateway |
| TG | Thompson Gun |
| TG | Troop Guide (Boy Scouts of America) |
| TG | Totino-Grace (Minnesota High School) |
| TG | Toy Guy |
| TG | Task Graph |
| TG | Twin Groves (Illinois, USA) |
| TG | Transactions on Graphics |
| TG | True Gravity |
| TG | Tail Grab (skiing and snowboarding) |
| TG | Triple Glazing (windows) |
| TG | Transmitter Group |
| TG | Trinity Grammar (school) |
| TG | Transaction Group |
| TG | Tote Gote (mini bike) |
| TG | Tanner Graph |
| TG | Tigre Géant (Canadian retailer) |
| TG | Tangent Galvanometer (physics) |
| TG | Total Gradient (gravity and magnetic) |
| TG | Tracking Gain |
| TG | Track Gate |
| TG | Traffic Gateway |
| TG | Thermite Grenade |
| TG | Tactical Guard |
| TG | Transformation Gateway (Net6) |
| TG | Top of Grate (surveying) |
| TG | Texas Gunmen (gaming group) |
| TG | Thomas Group Ltd (Orange, CA) |
| TG | 6-Thioguanine (chemotherapy drug) |