| RTT | Round-Trip Time | 往返时间 |
| RTT | Radio Transfers Technology | 无线传输技术 |
| RTT | Radiation Tracking Transducer | 红外线跟踪系统,辐射跟踪换能器 |
| RTT | Average Response Time | 平均响应时间 |
| RTT | Registered Radiation Therapy Technologist (American Society of Radiologic Technologists) | 注册放射治疗技师（美国放射技师协会） |
| RTT | Ready to Test | 准备好测试 |
| RTT | Resonant Tunneling Transistor | 共振隧穿晶体管 |
| RTT | Referral To Treatment (medicine) | 转诊治疗（医学） |
| RTT | Response Technology Team | 响应技术团队 |
| RTT | Radio Transmission Techniques | 无线电传输技术 |
| RTT | Render-To-Texture (computer graphics) | 渲染到纹理（计算机图形） |
| RTT | Requirements Tracking Tool | 需求跟踪工具 |
| RTT | Real-Time Tactics (gaming) | 实时战术（游戏） |
| RTT | RÉduction du Temps de Travail (French: reduction of working time) | RÉduction du Temps de Travail (French: reduction of working time) |
| RTT | Resources, Trade and Technology (US CIA) | 资源、贸易和技术（美国中央情报局） |
| RTT | Round Trip Time | 往返时间 |
| RTT | Radio Transmission Technology | 无线电传输技术 |
| RTT | Rett Syndrome | Rett综合征 |
| RTT | Recapture Tactics Team | 重新捕获战术团队 |
| RTT | reliability coefficient | 可靠性系数 |
| RTT | radiation therapy technology | 放射治疗技术 |
| RTT | Reply To This | 答复此 |
| RTT | Real- Time Training | 实时培训 |
| RTT | Rum Tum Tugger | 若腾塔格 |
| RTT | Radio Type Tested | 无线电类型测试 |
| RTT | Rogue Trader Tournament | 流氓交易者锦标赛 |
| RTT | River Trails Transit Lines, Inc. (Galena, Illinois) | River Trails Transit Lines，Inc.（伊利诺伊州加利纳） |
| RTT | Raw Turn Time | 原始转弯时间 |
| RTT | Round Trip Table | 往返行程表 |
| RTT | Remember the Titans (TV show) | 记住泰坦（电视节目） |
| RTT | Reduced Top Tube | 缩小顶部管 |
| RTT | reaction time test | 反应时间试验 |
| RTT | Randomly Thought Thoughts | 随机思考想法 |
| RTT | Resent Timeout Time | 重新发送超时时间 |
| RTT | Radion Transmission Technology | 无线电传输技术 |
| RTT | Rat-a-Tat Tat | Rat-a-Tat塔特 |
| RTT | Real Time Tactical | 实时战术 |
| RTT | Resources Treatment And Training | 资源处理和培训 |
| RTT | Refrigerant Tracking Tool | 制冷剂跟踪工具 |
| RTT | Response Time Test | 响应时间测试 |
| RTT | Right-Tailed Test | 右尾测试 |
| RTT | Rapid Technology Transition (Office of Naval Research funding option out of POM cycle) | 快速技术转型（POM周期外的海军研究办公室资助选项） |
| RTT | Requirement Traceability Table | 需求跟踪表 |
| RTT | Round Trip Travel Time | 往返行程时间 |
| RTT | Rock This Town (band) | 摇滚这个小镇（乐队） |
| RTT | Research Tools for Translators | 翻译研究工具 |
| RTT | Regional Training Team | 区域培训团队 |
| RTT | Round The Twist (Australian children's TV show) | 圆的皮(澳大利亚儿童电视节目) |
| RTT | Ratio Threshold Test | 比率阈值测试 |
| RTT | Right to Turban | Turban的权利 |
| RTT | RÉgie des TÉlÉgraphes et des TÉlÉphones (French) | RÉgie des TÉlÉgraphes et des TÉlÉphones (French) |
| RTT | Resistance Point to Point | 点对点电阻 |
| RTT | Reconfigurable Tactical Trainer | 可重构战术训练器 |
| RTT | Radiation Transport Theory | 辐射传输理论 |
| RTT | Rocket Thrown Torpedo | 火箭投掷鱼雷 |
| RTT | Remember That Time | 记住那段时间 |
| RTT | Real-Time Tomography | 实时层析成像 |
| RTT | Real-Time Targeting | 实时定位 |
| RTT | Real Time Traffic (report) | 实时流量（报告） |