| TCG | Tightly-Coupled Group | 紧密耦合组 |
| TCG | Traffic Cash Gold (webmaster affiliate program) | 流量现金金（站长联盟计划） |
| TCG | Transponder Control Group | 收发器控制总成 |
| TCG | Tassa Concessione Governativa | Tassa特许权政府 |
| TCG | Tactical Communications Group (USAF) | 战术通信组（USAF） |
| TCG | Tradable Card Game | 可交易纸牌游戏 |
| TCG | Topical Classification Guide | 主题分类指南 |
| TCG | Theatre Communications Group | 剧院通讯组 |
| TCG | Trusted Computing Group (successor to Trusted Computing Platform Alliance) | 可信计算集团（可信计算平台联盟的继任者） |
| TCG | Teleport Communications Group | Teleport通信集团 |
| TCG | Tables of Contents in Geodesy | 大地测量学目录 |
| TCG | t-cell growth factor | t细胞生长因子 |
| TCG | Tactical Computer Group | 战术计算机组 |
| TCG | Treasury Center Germany | 德国财政中心 |
| TCG | Time Code Generator | 时间代码生成器 |
| TCG | Transverse Center of Gravity | 横向重心 |
| TCG | Tune-Controlled Gain | 调谐控制增益 |
| TCG | Temari Consulting Group (Montreal, Canada) | Temari咨询集团（加拿大蒙特利尔） |
| TCG | TÜrkiye Cunhuriyeti Gemisi (Turkish Republic Ship) | TÜrkiye Cunhuriyeti Gemisi (Turkish Republic Ship) |
| TCG | Tucson Cornelia and Gila Bend Railroad Company | Tucson Cornelia和Gila Bend铁路公司 |
| TCG | Technology Coordination Group | 技术协调小组 |
| TCG | Trusted Computer Group | 受信任的计算机组 |
| TCG | Tacheng, Mainland China | 中国大陆塔城 |
| TCG | Technical Chamber of Greece | 希腊技术商会 |
| TCG | Threat Coordinating Group | 威胁协调小组 |
| TCG | Tennessee Contest Group | 田纳西州竞赛组 |
| TCG | Trading Card Games | 交易卡游戏 |
| TCG | Tasking and Coordinating Group | 任务分配和协调小组 |
| TCG | Threat Coordination Group | 威胁协调小组 |
| TCG | Tri-Diagonal Preconditioned Conjugate Gradient | 三对角预处理共轭梯度 |
| TCG | Technical Coordination Group | 技术协调小组 |
| TCG | The Consulting Group (Tiburon, CA) | 咨询小组（加利福尼亚州蒂伯龙） |
| TCG | Transaction Class Group (IBM mainframes, workload management) | 事务类组（IBM大型机、工作负载管理） |
| TCG | Touchstone Consulting Group (Worcester, MA) | Touchstone咨询集团（马萨诸塞州伍斯特） |
| TCG | Toronto Caving Group | 多伦多Caving集团 |
| TCG | Teleco Communications Group (MCC) | 电信通信集团（MCC） |
| TCG | The Copyright Group, Inc. | 版权集团。 |
| TCG | Track Control Group | 轨道控制组 |
| TCG | Troop Carrier Group | 部队运输队 |
| TCG | Test Control Group | 测试控制组 |
| TCG | The Crawford Group | 克劳福德集团 |
| TCG | The Catalyst Group, Inc. | Catalyst Group，Inc.公司。 |
| TCG | Total Combustible Gas | 可燃气体总量 |
| TCG | Technicians Component Group | 技术人员组件组 |
| TCG | Towhey Consulting Group, Inc (Toronto, ON, Canada) | Towhey Consulting Group，Inc（加拿大安大略省多伦多市） |
| TCG | Total Cash Generated | 产生的现金总额 |
| TCG | Trading Card Game | 交易卡游戏 |
| TCG | time compensation gain | 时间补偿增益 |