| Acronym | Definition |
|---|
| TCG | Trusted Computing Group (successor to Trusted Computing Platform Alliance) |
| TCG | Theatre Communications Group |
| TCG | Teleport Communications Group |
| TCG | Tactical Communications Group (USAF) |
| TCG | Troop Carrier Group |
| TCG | Time Code Generator |
| TCG | Traffic Cash Gold (webmaster affiliate program) |
| TCG | Tactical Control Group |
| TCG | Technical Coordination Group |
| TCG | The Consulting Group (Tiburon, CA) |
| TCG | The Competence Group (Chicago, IL) |
| TCG | Touchstone Consulting Group (Worcester, MA) |
| tCg | The Crawford Group |
| TCG | Travelchinaguide (website) |
| TCG | Tradable Card Game |
| TCG | Toronto Caving Group |
| TCG | Transverse Center of Gravity |
| TCG | Total Combustible Gas |
| TCG | Tables of Contents in Geodesy |
| TCG | Track Control Group |
| TCG | Topical Classification Guide |
| TCG | The Catalyst Group, Inc. |
| TCG | Tassa Concessione Governativa |
| TCG | Total Cash Generated |
| TCG | Test Control Group |
| TCG | Transaction Class Group (IBM mainframes, workload management) |
| TCG | Tactical Coordinating Group (UK) |
| TCG | Towhey Consulting Group, Inc (Toronto, ON, Canada) |
| TCG | Türkiye Cunhuriyeti Gemisi (Turkish Republic Ship) |
| TCG | Threat Coordination Group |
| TCG | The Copyright Group, Inc. |
| TCG | Tightly-Coupled Group |
| TCG | Transponder Control Group |
| TCG | Tune-Controlled Gain |
| TCG | Teleco Communications Group (MCC) |
| TCG | Treasury Center Germany |
| TCG | Technicians Component Group |
| TCG | Tri-Diagonal Preconditioned Conjugate Gradient |
| TCG | Tactical Computer Group |
| TCG | The Cheetah Girls (band) |
| TCG | Thomas Cook Group (UK) |
| TCG | Temari Consulting Group (Montreal, Canada) |
| TCG | The Channel Group (various locations) |
| TCG | The Capital Grille (various locations) |
| TCG | The Climate Group (various locations) |