| RTA | RapidIO Trade AssociationRapidIO | 行业协会 |
| RTA | Roads and Traffic Authority | 交管局 |
| RTA | Regional Trade Arrangements | 区域贸易安排 |
| RTA | Real Time Analyzer | 实时分析器 |
| RTA | Rapid Thermal Annealing | 灯加热（固相生长法） |
| RTA | Road Transport Association | 道路运输协会 |
| RTA | Regional Trade Associations/Alliances | 区域贸易协会/联盟 |
| RTA | Retired Troopers Association | 退役军人协会 |
| RTA | Runestone Telephone Association | Runestone电话协会 |
| RTA | Rochester Teachers Association (Rochester, NY) | 罗切斯特教师协会（纽约州罗切斯特） |
| RTA | Recreational Tennis Association | 娱乐网球协会 |
| RTA | Railway Tie Association | 铁路协会 |
| RTA | Retired Teachers Association | 退休教师协会 |
| RTA | Russell Trust Association (aka Yale's Skull and Bones Society) | 罗素信任协会(aka耶鲁的头骨和骨骼的社会) |
| RTA | Rapid Transit Authority | 快速交通管理局 |
| RTA | Regional Trade Agreement | 区域贸易协定 |
| RTA | Rewriting Techniques and Applications | 重写技术及应用 |
| RTA | Remote to AFOS | 远程至AFOS |
| RTA | Radio-TÉlÉvision AlgÉrienne (Algeria) | Radio-TÉlÉvision AlgÉrienne (Algeria) |
| RTA | Responsible Test Agency | 责任测试机构 |
| RTA | Recommendation to Award | 授予建议 |
| RTA | Rotor Test Apparatus | 转子试验装置 |
| RTA | Revolutionary Turbine Accelerator | 革命性涡轮加速器 |
| RTA | Risk Task Assessment (Health, Safety and Environmental Codes of Practice) | 风险任务评估（健康、安全和环境操作规程） |
| RTA | Regional Trading Arrangement | 区域贸易安排 |
| RTA | Read the Article | 阅读文章 |
| RTA | Radio Television Afghanistan | 阿富汗广播电视台 |
| RTA | Ragnarok: the Animation (game) | Ragnarok：动画（游戏） |
| RTA | Related Technical Activities | 相关技术活动 |
| RTA | Residual Threat Assessment | 剩余威胁评估 |
| RTA | Receiver-Transmitter Antenna | 接收机-发射机天线 |
| RTA | Reverse Transfer Arc | 反向转移弧 |
| RTA | Road & Traffic Authority | 道路和交通主管机关定之 |
| RTA | Regional Transportation Alignment (merchandising) | 区域运输路线（商品化） |
| RTA | Riverside Transit Authority | 河滨交通管理局 |
| RTA | Read to Achieve | 阅读以实现 |
| RTA | RoadTrip America | 美国公路旅行 |
| RTA | Retention 'Til Access (memory access technology) | 保留' Til访问内存接入技术 |
| RTA | Regional Transportation Authority (Chicago, IL, USA) | 区域运输局（美国伊利诺伊州芝加哥） |
| RTA | Range & Training Area (USMC) | 范围及培训地区(符合美国海军陆战队的) |
| RTA | Reusable Testing Assets | 可重用测试资产 |
| RTA | Ray-Tracing Approach | 光线跟踪方法 |
| RTA | Road Traffic Act (Northern Ireland) | 道路交通法（北爱尔兰） |
| RTA | Research and Technology Agency (NATO) | 研究与技术局（北约） |
| RTA | Requirements Traceability Analysis | 需求可追溯性分析 |
| RTA | Real-Time Analyzer | 实时分析仪 |
| RTA | Root The Area | 根区域 |
| RTA | Rapid Transit Administration | 快速交通管理 |
| RTA | Resident Technical Assistant | 驻地技术助理 |
| RTA | Regional Tourism Administration | 地区旅游局 |
| RTA | Road To Avonlea | 通往Avonley的道路 |
| RTA | Rotuma Island, Fiji | 斐济罗图马岛 |
| RTA | Returned To Australia | 返回澳大利亚 |
| RTA | Rapid Thermal Anneal | 快速热退火 |
| RTA | Repatriated To Australia | 遣返澳大利亚 |
| RTA | Residential Tenancies Authority | 住宅租赁管理局 |
| RTA | Rapid Type Analysis | 快速类型分析 |
| RTA | Renal Tubular Acidosis | 肾小管酸中毒 |
| RTA | Road Traffic Accident | 道路交通事故 |
| RTA | Regional Transit Authority | 区域交通管理局 |
| RTA | Restricted To Adults | 仅限成人 |
| RTA | Referring Travel Agent | 推荐旅行社 |
| RTA | Response Time Analysis | 响应时间分析 |
| RTA | Greater Cleveland Regional Transit Authority | 大克利夫兰地区交通管理局 |
| RTA | Resident Twinning Advisor | 常驻双胞胎顾问 |
| RTA | Ready-To-Assemble (product) | 准备组装（产品） |
| RTA | Required Time of Arrival | 要求到达时间 |
| RTA | Royal Thai Army | 泰国皇家陆军 |
| RTA | Remote Trunk Arrangement | 远程行李箱布置 |
| RTA | Remember the Alamo | 记住阿拉莫 |
| RTA | Ready-To-Advertise | 准备好发布广告 |
| RTA | Revised Time of Arrival | 修改后的到达时间 |
| RTA | Right Torsion of the Abomasum | 皱胃右扭转 |
| RTA | Restructuring The Army | 重组军队 |
| RTA | Random Task Arrival | 随机任务到达 |
| RTA | Return to Archive | 返回存档 |
| RTA | Ricin Toxin A | 蓖麻毒素A |
| RTA | radiothermal analysis | 放射性热分析 |
| RTA | Roads and Transportation Authority (United Arab Emirates) | 道路和运输管理局（阿拉伯联合酋长国） |
| RTA | Receiver Transmitter Assembly | 接收器-发射器组件 |
| RTA | renal tubular antigen | 肾小管抗原 |
| RTA | Real Time Author | 实时作者 |
| RTA | renal tubule acidosis | 肾小管酸中毒 |
| RTA | Ready To Apply | 准备好应用 |
| RTA | racemic tartaric acid | 外消旋酒石酸 |
| RTA | Rubidium Titanyl Arsenate | 砷酸钛铷 |
| RTA | rheological thermal analysis | 流变热分析 |
| RTA | Ready To Assemble | 准备好组装 |
| RTA | Regional Transportation Authority | 区域交通管理局 |
| RTA | Road Traffic Accidents | 道路交通事故 |
| RTA | Religious And Theological Abstracts | 宗教和神学摘要 |
| RTA | Regional Transit Administration | 区域交通管理局 |