| TSAR | Test Schedule and Review | 测试时间表和审查 |
| TSAR | Taiwan Surveillance of Antimicrobial Resistance | 台湾抗菌药物耐药性监测 |
| TSAR | Transportation Statistics Annual Report | 交通统计年度报告 |
| TSAR | TRANSCOM Siting And Readiness | TRANSCOM选址和准备 |
| TSAR | Time Scanned Array Radar | 时间扫描阵列雷达 |
| TSAR | Training Situation Analysis Report | 培训情况分析报告 |
| TSAR | Technical Safety Analysis Report (US Department of Energy) | 技术安全分析报告（美国能源部） |
| TSAR | Topical Safety Analysis Report | 局部安全分析报告 |
| TSAR | Tu Sers A Rien (French: you are useless) | Tu Sers A Rien（法语：你没用） |
| TSAR | Theater Simulation of Airbase Resources (Model) | 空军基地资源战区仿真（模型） |
| TSAR | Total System Acknowledgement Responsibility | 总系统确认责任 |
| TSAR | Tristar Corporation | Tristar公司 |
| TSAR | Terminating Switched Access Rate | 终止交换接入速率 |
| TSAR | Time Series Acoustic Recall | 时间序列声学召回 |
| TSAR | Tactical Situational Awareness Relay | 战术态势感知中继 |
| TSAR | Tidewater Search and Rescue (Norfolk, VA) | 潮水搜救（弗吉尼亚州诺福克） |
| TSAR | Transportation Security Administration Representative | 运输安全管理局代表 |
| TSAR | Theater Simulation of Airfield Resources | 机场资源的战区模拟 |
| TSAR | Texas Stairs and Rails (Houston, TX) | 德克萨斯州楼梯和栏杆（德克萨斯州休斯顿） |
| TSAR | Transmission Security Analysis Report | 传输安全分析报告 |