| TSA | Tourist Savings Association | 旅游储蓄协会 |
| TSA | Transportation Standardization Agency | 运输标准化局 |
| TSA | Tank Storage Association (UK) | 储罐储存协会（英国） |
| TSA | Texas Society of Anesthesiologists | 德克萨斯州麻醉医师协会 |
| TSA | Tuberous Sclerosis Alliance (formerly National Tuberous Sclerosis Association; Silver Spring, Maryland) | 结节性硬化联盟（原美国国家结节性硬化协会；马里兰州银泉） |
| TSA | Telecommunication Society of Australia | 澳大利亚电信协会 |
| TSA | Taipei, Taiwan - Sung Shan (Airport Code) | 台北，台湾-松山（机场代码） |
| TSA | Texas Speleological Association | 德克萨斯州Speleological协会 |
| TSA | Thai Student Association | 泰国学生协会 |
| TSA | The Salon Association | 沙龙协会 |
| TSA | Textile Services Association Limited (UK) | 纺织服务协会有限公司（英国） |
| TSA | Technology Student Association | 技术学生协会 |
| TSA | Technical Services Associates, Inc. | 技术服务协会。 |
| TSA | Tuberous Sclerosis Association (UK) | 结节性硬化症协会（英国） |
| TSA | The Scout Association (UK) | 童军协会（英国） |
| TSA | Texas Sign Association | 德克萨斯州标志协会 |
| TSA | The Securities Association Ltd. | 证券业协会。 |
| TSA | Transportation Security Administration (US Department of Homeland Security) | 运输安全管理局（美国国土安全部） |
| TSA | Transportation Security Administration | 交通安全管理局 |
| TSA | Technical Service Agreement | 技术服务协议 |
| TSA | Timber Supply Area (Canada) | 木材供应区（加拿大） |
| TSA | Technical Security Area | 技术安全区域 |
| TSA | Technical Safety Appraisal | 技术安全评估 |
| TSA | Transuranic Storage Area | 超铀储存区 |
| TSA | Target Software Agent(s) | 目标软件代理 |
| TSA | Troop Support Agency (Army) | 部队支助局（陆军） |
| TSA | Transmitting Subscriber Internet Address | 传输用户Internet地址 |
| TSA | Transmitter/Servo Drive/Antenna | 发射器/伺服驱动/天线 |
| TSA | Transport Services Agreement | 运输服务协议 |
| TSA | Technical Services Analyst | 技术服务分析师 |
| TSA | Thermal Shield Antenna | 热屏蔽天线 |
| TSA | Target State Architecture (Sprint) | 目标状态架构（Sprint） |
| TSA | Time-Scale Analysis | 时间尺度分析 |
| TSA | Tactical Situation Assessment | 战术态势评估 |
| TSA | Total Survey Area | 总测量面积 |
| TSA | Täby Sändaramatörer (Swedish radio club) | Täby Sändaramatörer (Swedish radio club) |
| TSA | Tampa Sports Authority | 坦帕体育管理局 |
| TSA | The Salvation Army | 救世军 |
| TSA | Teacher on Special Assignment | 特殊任务教师 |
| TSA | Testing Support Activity | 测试支持活动 |
| TSA | Transaction Systems Architects, Inc | 交易系统架构师公司 |
| TSA | Total Sample Area | 总样本面积 |
| TSA | Theatre Students' Association | 剧院学生会 |
| TSA | The Schemmer Associates, Inc (Omaha, NE) | The Schemmer Associates，Inc（东北奥马哈） |
| TSA | Transmitting Subscriber Address | 发送用户地址 |
| TSA | theater storage area (US DoD) | 战区存储区（美国国防部） |
| TSA | Time Stamping Authority (electronic commerce) | 时间戳管理局（电子商务） |
| TSA | Total Shoulder Arthroplasty (shoulder joint surgery) | 全肩关节置换术（肩关节手术） |
| TSA | Tolerance Stack Analysis (mechanical engineering) | 公差叠加分析（机械工程） |
| TSA | Travel Security Advisory | 旅行安全咨询 |
| TSA | Temple Scott Associates (public relations and government relations firm; Canada) | Temple Scott Associates（公共关系和政府关系公司；加拿大） |
| TSA | Tajne Stowarzyszenie AbstynentÓw (Polish) | Tajne Stowarzyszenie AbstynentÓw (Polish) |
| TSA | Temporary Support Assistant (school districts) | 临时支助助理（学区） |
| TSA | Temporary Segregated Area (aviation) | 临时隔离区（航空） |
| TSA | Thermally Sprayed Aluminum | 热喷涂铝 |
| TSA | Transient Suppression Assembly | 瞬态抑制组件 |
| TSA | Tanzania Serengeti Adventure (safari operator) | 坦桑尼亚塞伦盖蒂探险（野生动物园经营者） |
| TSA | target system analysis (US DoD) | 目标系统分析（美国国防部） |
| TSA | Tourism Satellite Account | 旅游卫星账户 |
| TSA | Training Support Agent | 培训支持代理 |
| TSA | Technical Support and Analysis | 技术支持和分析 |
| TSA | Trace Suspension Assembly (hard drive component) | 跟踪悬架组件（硬盘驱动器部件） |
| TSA | Trichostatin A (histone deacetylase inhibitor) | 曲古抑菌素A（组蛋白脱乙酰酶抑制剂） |
| TSA | Tropical and Subtropical Agriculture | 热带和亚热带农业 |
| TSA | Transport Stream Analyzer (Instrument used in DTV broadcasting to ascertain the condition of the stream) | 传输流分析器（DTV广播中用于确定流状态的仪器） |
| TSA | Trainer Support Activity | 培训师支持活动 |
| TSA | tryptone soya agar | 胰蛋白酶大豆琼脂 |
| TSA | transcortical sensory aphasia | 经皮质感觉性失语 |
| TSA | Tax Sheltered Annuity | 避税年金 |
| TSA | Taxiway Safety Area | 滑行道安全区 |
| TSA | Target Signature Array | 目标签名数组 |
| TSA | Tryptic Soy Agar | 胰蛋白大豆琼脂 |
| TSA | Test Start Approval | 测试开始批准 |
| TSA | total surface area | 总表面积 |
| TSA | Theosophical Society in America | 美国神学学会 |
| TSA | Threat Situational Awareness | 威胁态势感知 |
| TSA | Transformation Story Archive | 转型故事存档 |
| TSA | Time Series Analysis | 时间序列分析 |
| TSA | Transition State Analog | 过渡状态模拟 |
| TSA | Time Slot Assignment | 时隙分配 |
| TSA | Technical Support Area | 技术支持区 |
| TSA | Technical & Scientific Application, Inc (Houston, Texas) | 技术和科学的应用、股份有限公司(德克萨斯州的休斯顿市) |
| TSA | Triple Sugar Agar | 三糖琼脂 |
| TSA | TELUS Solutions d'Affaires | TELUS解决'Affaires d |
| TSA | Technikon Southern Africa | 南非Technikon |
| TSA | Thermoelastic Stress Analysis | 热弹性应力分析 |
| TSA | Tapered Slot Antenna | 锥形槽天线 |
| TSA | Target System Architecture | 目标系统架构 |
| TSA | Trans System Authority (gaming, Natural-Selection) | 跨系统权限（游戏、自然选择） |
| TSA | Technologie en SantÉ Animale | Technologie en SantÉ Animale |
| TSA | Temperate South America | 温带南美洲 |
| TSA | Theater Storage Activities/Ammunition | 剧院存储活动/弹药 |
| TSA | Technical System Audit | 技术系统审核 |
| TSA | Temporal Security Agency (gaming) | 临时安全局（游戏） |
| TSA | The Senate Arcade (Seattle, Washington band) | 参议院拱廊（西雅图，华盛顿乐队） |
| TSA | Technical Support Activity/Agent | 技术支持活动/代理 |
| TSA | Technical Support Alliance | 技术支持联盟 |
| TSA | Technology Safeguard Agreement | 技术保障协议 |
| TSA | Target Service Agent (Novell) | 目标服务代理（Novell） |