| 序号 | 英文 | 音标 | 词性 | 中文 |
| | ROTFL | | abbr. | Rolling on the Floor Laughing, 笑得在地板上打滚 |
| | ROTR | | | =Receive-Only Typing Reperforator 收报专用打字穿孔机 |
| | RP | | abbr. | Republic of the Philippines ,菲律宾共和国 |
| | RPA | | | =Radar Performance Analyzer 雷达性能分析器 |
| | RPC | | abbr. | Royal Pioneer Corps (英国)皇家轻工兵(部队) |
| | RPD | | | =Radar Planning [Prediction] Device雷达训练[预测]装置 |
| | RPE | | abbr. | Reformed Protestant Episcopal (基督教)新主教派教会 |
| | RPF | | | =Radio Position Finding无线电定位(学), 雷达学 |
| | RPG | | abbr. | Role Play Games , 角色扮演游戏 |
| | RPI | | abbr. | Retail Price Index, 零售物价指数 |
| | RPL | | | =Radar Processing Language雷达处理语言 |
| | RPM | | | =Reliability Performance Measure 可靠性能测定 |
| | RPO | | abbr. | （英国）皇家交响乐队 (Royal Philharmonic Orchestra) |
| | RPQ | | abbr. | request for price quotation 报价申请书 |
| | RPR | | | =Romania People's Republic 罗马尼亚人民共和国 |
| | RPRAGB | | | =Rubber and Plastics Research Association of Great Britain英国橡胶塑料研究协会 |
| | RPS | | | =Radiation Protection Standards辐射防护标准 |
| | RPV | | abbr. | [军] Remotely Piloted Vehicle, 遥控飞行器 |
| | RQ | | | =Respiratory Quotient呼吸商 |
| | RQAO | | | =Reliability and Quality Assurance Office可靠性和质量保证局([美]NASA) |
| | RR | | | =continuous heavy rain[气]连续大雨 |
| | RR Lyrae stars | | | 天琴RR型星 |
| | RR layup | | | 聚脂树脂增强层压材料 |
| | RRA | | | =Radiation Research Association 辐射研究协会[英] |
| | RRB | | abbr. | Railroad Retirement Board (美国)铁路职工退休管理委员会 |
| | RRC | | abbr. | (Lady of the) Royal Red Cross (英国)皇家护士红十字勋章(获得者) |
| | RRE | | | =Resonance Raman Effect拉曼共振效应 |
| | RRF | | | =Referigeration Research Foundation 制冷研究基金会[美] |
| | RRI | | | =Rocket Research Institute 火箭研究所[美] |
| | RRL | | | =Radio Research Laboratory 无线电研究实验所[日] |
| | RRT | | | =Rendezvous Radar Transponder (飞行器)会合雷达应答器 |
| | RS | | | =Radio Sonde 无线电高空测候 |
| | RS-232C | | | [计] 由EIA定义的串行接口的电子与电缆链接特性的标准 |
| | RSA | | | 美国RSA实验室, 以研究加密算法而著名 |
| | RSA encryption technique | | | [计] RSA加密技术 |
| | RSC | | abbr. | Royal Shakespeare Company, 英国皇家莎士比亚剧团 |
| | RSCS | | | =Rate Stabilization and Control System 速率稳定与控制系统 |
| | RSD | | abbr. | Royal Society of Dublin (爱尔兰)都柏林皇家学会 |
| | RSE | | abbr. | Royal Society of Edinburgh (英国)爱丁堡皇家学会 |
| | RSFSR | | | =Russian Soviet Federated Socialist Republic 俄罗斯苏维埃社会主义联邦共和国 |
| | RSG | | | =Rate Signal Generator 比率信号发生器 |
| | RSGB | | abbr. | Radio Society of Great Britain 大不列颠无线电学会 |
| | RSH | | | =Royal Society of Health 皇家卫生学会[英] |
| | RSI | | abbr. | [军] Rationlization,Standardization,Interoperability, 合理化,标准化及相互适应性 |
| | RSIC | | | =Radiation Shielding Information Center 放射性屏蔽情报中心([美]DOE) |
| | RSJ | | abbr. | Rolled Steel Joist, I型钢 |
| | RSL | | abbr. | Royal Society of Literature (英国)皇家文学学会 |
| | RSM | | abbr. | 准尉 (Regimental Sergeant-Major) |
| | RSN | | abbr. | Real Soon Now, 即将发生 |
| | RSNA | | | =Radiological Society of North America 北美放射学会 |
| | RSO | | | =Railway Sorting Office 铁路编组室 |
| | RSP | | | responder beacon 应答机 |
| | RSPA | | | =Royal Society for the Prevention of Accidents 皇家事故预防协会[英] |
| | RSPB | | abbr. | （英国）皇家鸟类保护协会 |
| | RSPCA | | abbr. | （英国）皇家防止虐待动物协会 (Royal Society) |
| | RSPL | | | =Recommended Spare Parts List 推荐的备件单 |
| | RSR | | | =Route Surveillance Radar 航路监视雷达 |
| | RSRE | | | =Radar and Signals Research Establishment 雷达与信号研究所([英]MOD) |
| | RSRS | | | =Radio and Space Research Station 无线电和宇宙空间研究站[英] |
| | RSS | | abbr. | <拉>Regiae Societatis Socius (英国)皇家学会会员(= Fellow ofthe Royal Society) |
| | RST | | | =Radiosensitivity Testing 放射敏感试验 |
| | RSU | | | =Rate-Sensor Unit 速率传感器装置 |
| | RSV | | abbr. | Revised Standard Version, 修订标准版 |
| | RSVP | | abbr. | Reply,if you please, 请回复 |
| | RSWC | | abbr. | right side up with care (货运包装用语)正面朝上轻放 |
| | RT | | | =Radioisotope Tracer 放射性同位素指示剂, 放射性示踪物 |
| | RTA | | | =Real Time Analyzer 实时分析器 |
| | RTC | | | =Radar TrackingCentre雷达跟踪中心 |
| | RTCA | | | =Radio Technical Commission for Aeronautics 航空无线电技术委员会[美] |
| | RTCC | | | =Real Time Computer Complex 实时复合计算机 |
| | RTCI | | | =Radar Tactical Control Instrument 战术雷达控制仪 |
| | RTCM | | | =Radio Technical Committee for Marine Services 海运事业无线电技术委员会[美] |
| | RTD | | | =Research and Technology Division 研究与技术部 |
| | RTE | | | =Regenerative Turboprop Engine 再生式涡旋浆发动机 |
| | RTF | | | [计] Rich Text Format (Rich-Text格式) |
| | RTG | | | =Radioisotope Thermo-electric Generator 放射性同位素热电式发电机 |
| | RTL | | abbr. | Resistor Transistor Logic [电子]电阻晶体管逻辑(电路) |
| | RTLC | | | =Radio Thin-Layer Chromatography 放射薄层色谱法 |
| | RTM | | abbr. | Read The (F***) Manual,请阅读使用手册(=RTFM) |
| | RTO | | abbr. | railroad transportation officer 铁路运输管理军官 |
| | RTOL | `B:tEul | n. | 短距起落飞机 |
| | RTOS | | | =Real-Time Operating System 实时操作系统 |
| | RTP | | | =Real-Time Position 实时位置 |
| | RTPB | | | =Radio Technical Planning Board 无线电技术发展规划委员会[美] |
| | RTPL | | | =Real-Time Procedural Language 实时过程语言 |
| | RTR | | | =Radio Teletype Receiver 无线电电传打字电报接收机 |
| | RTS | | | 发送请求 |
| | RTT | | | =Radiation Tracking Transducer 红外线跟踪系统, 辐射跟踪换能器 |
| | RTTS | | | =Real-Time Transmission System 实时传送系统 |
| | RTTY | | abbr. | Radio Teletype, 无线电报 |
| | RTU | | | =Remote Terminal Unit远程终端设备 |
| | RTV | | | =Re-entry Test Vehicle 再入试验飞行器[火箭] |
| | RTW | | | =Reserve Training Wing[航空]后备队教练联队[美] |
| | RU | | abbr. | （英国）橄榄球协会 (Rugby Union) |
| | RUC | | abbr. | （英国）北爱尔兰皇家骑警队 (Royal Ulster Constabulary) |
| | RV | | abbr. | <美> Recreational Vehicle ,娱乐车 |
| | RV Tauri stars | | | 金牛RV型星 |
| | RVSVP | | v. | s.v.p. abbr.<法> répondez vite s'il vous plait 请速答覆(=please reply quickly) |
| | RW Aurigal stars | | | 御夫RW型星 |
| | RWD | | abbr. | [汽] Rear Wheel Drive, 后轮驱动 |
| | RXD | | | [计] 接收数据 |