| TRA | Tire and Rim Association(US) | 美国轮胎协会 |
| TRA | Telecommunications Research Associates | 电信研究协会 |
| TRA | Teachers Retirement Association | 教师退休协会 |
| TRA | Tripoli Rocketry Association | 的黎波里火箭协会 |
| TRA | Telecommunications Resellers Association | 电信经销商协会 |
| TRA | Theodore Roosevelt Association | 西奥多·罗斯福协会 |
| TRA | Texas Restaurant Association (Austin, TX) | 德克萨斯州餐厅协会（德克萨斯州奥斯汀） |
| TRA | Track Runnin Associates | 田径运动员协会 |
| TRA | Towers Residence Association (Iowa State University dorm association) | Towers Residence协会（爱荷华州立大学宿舍协会） |
| TRA | Tire and Rim Association | 轮胎和轮辋协会 |
| TRA | Trade | 贸易 |
| TRA | tumor rejection antigen | 肿瘤排斥抗原 |
| TRA | Threat and Risk Assessment | 威胁和风险评估 |
| TRA | Temporary Restricted Area | 临时限制区 |
| TRA | Transition | 过渡 |
| TRA | transformer | 变压器 |
| TRA | Total Rate of Return Analytic | 总收益率分析 |
| TRA | Tanzania Revenue Authority | 坦桑尼亚税务局 |
| TRA | Task Risk Assessment | 任务风险评估 |
| TRA | Taiwan Railway Administration | 台湾铁路局 |
| TRA | Thrust Reduction Altitude (aviation) | 推力降低高度（航空） |
| TRA | Targeted Research Action | 有针对性的研究行动 |
| TRA | Tenant Remedies Act | 《承租人救济法》 |
| TRA | Trade Reference Assistant | 贸易参考助理 |
| TRA | Tape Recorders Anonymous | 匿名磁带录音机 |
| TRA | Trades Recognition Australia | 澳大利亚贸易认可 |
| TRA | The Ryhme Animal | Ryhme动物 |
| TRA | Taramajima, Japan | Taramajima，日本 |
| TRA | Timely Reminders Answer | 及时提醒回答 |
| TRA | The Realty Alliance | 房地产联盟 |
| TRA | The Rebel Alliance | 叛军联盟 |
| TRA | Top Rope Anchors | 顶部绳索锚固件 |
| TRA | Tingley Reagh And Adams | Tingley Reagh和Adams |
| TRA | Transceiver Assembly (wireless) | 收发器组件（无线） |
| TRA | Trade Readjustment Allowance | 贸易调整津贴 |
| TRA | Time-Reversal Acoustics | 时间反转声学 |
| TRA | Trachoma Rapid Assessment | Trachoma快速评估 |
| TRA | Trouble Report Automation (Sprint PCS) | 故障报告自动化（Sprint PCS） |
| TRA | Tennessee Regulatory Authority | 田纳西州监管局 |
| TRA | Taiwan Relations Act (US domestic law) | 《台湾关系法》（美国国内法） |
| TRA | Transverse Ray Aberration | 横向射线像差 |
| TRA | Training Requirements Analysis | 培训需求分析 |
| TRA | Tax Reform Act (1976, 1984, or 1986) | 《税收改革法案》（1976年、1984年或1986年） |
| TRA | tumor-resistant antigen | 抗肿瘤抗原 |
| TRA | transaldolase | 转醛酶 |
| TRA | traumatic rupture of the aorta | 创伤性主动脉破裂 |
| TRA | Tea Restoration Act | 茶叶恢复法案 |
| TRA | Tercera RegiÓn AÉrea | Tercera RegiÓn AÉrea |
| TRA | Terra Industries, Inc. | Terra Industries公司。 |
| TRA | Teacher Read Aloud | 老师大声朗读 |
| TRA | Time To Revise Answer | 修改答案的时间 |
| TRA | Telecommunications Reform Act of 1996 | 1996年电信改革法案 |
| TRA | Tapered Rod Antenna | 锥形杆天线 |
| TRA | Taxpayer Relief Act of 1997 | 1997年纳税人救济法案 |
| TRA | Telecommunications Regulatory Authority | 电信管理局 |
| TRA | Technical Requirement Analysis | 技术需求分析 |
| TRA | Theory of Reasoned Action | 理性行为理论 |
| TRA | The Reciprocal Alliance | 互惠联盟 |
| TRA | Temporary Reserved Airspace | 临时预留空域 |
| TRA | Trinity River Authority | 三一河管理局 |
| TRA | Test Reactor Area | 试验反应堆区域 |
| TRA | Tiruvannamalai Ramana Ashram (India) | Tiruvannamalai Ramana Ashram（印度） |
| TRA | Technology Readiness Assessment | 技术准备评估 |
| TRA | Throttle Resolver Angle | 油门分解器角度 |
| TRA | Technical Reference Architecture | 技术参考体系结构 |
| TRA | The Rebel Alliance (gaming clan) | 反叛联盟（游戏部落） |
| TRA | Traffic Routing Administration | 交通路线管理 |
| TRA | Time Reporting Assistance (Sprint) | 时间报告协助（Sprint） |
| TRA | Thin Rod Approximation | 细杆近似 |
| TRA | Torhoutse Radio Amateurs (Oostkamp, Belgium) | Torhoutse业余无线电爱好者（比利时奥斯特坎普） |