| Acronym | Sense | Language | Topics |
|---|---|---|---|
| RNTS | Regenerative Nonventing Thermal System | In English | |
| RO | Radar Operator | In English | |
| RO | Recovery Operations | In English | |
| ROADS | Resource and Operations Analysis Display System | In English | |
| ROAn | Royal Observatory Annals | In English | → Serial publications, periodicals → Astronomy |
| RoAPE | Review of African Political Economy | In English | → Serial publications, periodicals → Economics → Politics → Africa |
| ROB | Rigid Optical Bench | In English | |
| ROCC | Range Operational Control Center | In English | |
| ROCC | Ragion Operational Control Center | In English | |
| ROCE | Return On Capital Employed | In English | → Finance → Accounting |
| ROCES | Ranger Orbiter Crew Escape System | In English | → Astronautics |
| ROD | Remotely Operated Door | In English | |
| ROE | Return On Equities | In English | → Finance → Accounting |
| ROEU | Remotely Operated Electrical Umbilical | In English | → Astronautics |
| RoHS | Restriction of the use of certain Hazardous Substances (in electrical and electronic equipment) | In English | → Chemicals → Electrical engineering → Electronics |
| ROI | Return On Investment | In English | → Finance → Accounting |
| ROIS | Research Organization of Information and Systems (www.rois.ac.jp) | In English | → Research institutes → Computer science → Japan |
| ROL | Remote Operating Location | In English | |
| ROLAP | Relational On Line Analytical Processing | In English | → Knowledge management → Data |
| ROLun | Reports of the Lund Observatory | In English | → Serial publications, periodicals → Astronomy |
| ROM | Read Only Memory | In English | → Memories |
| ROM | Royal Ontario Museum (www.rom.on.ca) | In English | → Museums → Canada |
| ROM | Rough Order of Magnitude | In English | → Astronomy |
| ROMS | Regional Ocean Modeling System (www.myroms.org) | In English | → Marine research, oceanography |
| ROOL | RISC OS Open Limited | In English | → Computer science |
| RORSAT | Radar Ocean Reconnaissance Satellite | In English | → Marine research, oceanography → Astronautics |
| ROS | Reactive Oxygen Species | In English | → Biochemistry, biophysics |
| ROS | Read-Only Storage | In English | → Memories |
| ROS | Regulated Oxygen Supply | In English | |
| ROS | Removable Overhead Structure | In English | |
| ROSA | Romanian Space Agency | In English | → Central administration → Astronomy → Astronautics → Romania |
| ROSAT | ROentgen SATellite | In English | → Astronomy → Astronautics |
| ROSES | Rockwell Operational Software Engineering System | In English | → Software |
| ROSS | Remote Orbital Servicing System | In English | |
| ROSS/V | RSTS/E Operating System Simulator for VAX | In English | → Operating systems |
| ROST | Rockwell Operational System for Trades | In English | |
| ROT | Remaining Operating Time | In English | |
| ROTC | Reserve Officers Training Corps | In English | → Military affairs → Education |
| ROTFL | Rolling On The Floor Laughing | In English | |
| ROTFL | Rolling On the Floor, Laughing | In English | |
| ROTI | Recording Optical Tracking Instrument | In English | |
| ROTV | Returnable Orbital Transfer Vehicle | In English | → Astronautics |
| RP | Relative Pressure | In English | |
| RP | Rocket Propellant | In English | → Astronautics |
| RPA | Record and Playback Assembly | In English | |
| RPA | Request for Procurement Action | In English | |
| RPA | Request for Procurement Authorization | In English | |
| RPA | Reserve Personnel, Army | In English | → Military affairs |
| RPC | Remote Procedure Call | In English | → Telecommunications |
| RPC | Route Preemption Control | In English | → Transport and postal services |
| RPC | Remote Power Control | In English | → Electrical engineering |
| RPC | Remote Power Controller | In English | → Electrical engineering |
| RPCI | Roswell Park Cancer Institute (https://www.roswellpark.org/) | In English | → Research institutes → Oncology → United States |
| RPD | Reconfiguration Production Department | In English | |
| RPE | Reliability Project Engineer | In English | |
| RPE | Retinal Pigment Epithelium | In English | → Anatomy → Ophthalmology |
| RPF | Rapid Prototyping Facility | In English | |
| RPG | Role Playing Game | In English | → Entertainment |
| RPG | Report Program Generator = GAP | Générateur Automatique de Programmes | In French |
In English | → Programming languages |
| RPIE | Real Property Installed Equipment | In English | |
| RPL | Rated Power Level | In English | → Electrical engineering |
| RPL | Rocket Propulsion Laboratory | In English | → Research institutes → Astronautics |
| RPL | Reverse Polish Lisp | In English | → Programming languages |
| RPM | Retro Propulsion Module | In English | → Vehicle engineering |
| RPM | Remote Programmable Multiprocessor | In English | → Electronics |
| RPM | Real Property Maintenance | In English | → Maintenance and logistics |
| RPMA | Real Property Maintenance Activities | In English | → Maintenance and logistics |
| RpMP | Reports on Mathematical Physics | In English | → Serial publications, periodicals → Mathematics → Physics |
| RPN | Risk Priority Number | In English | → Management → Accidents, risks, safety |
| RPO | Radiation Protection Officer | In English | |
| RPO | Recruitment Process Outsourcing | In English | → Personnel management |
| RPOC | Remote Payload Operations Center | In English | → Astronautics |
| RPP | Reinforced Pyrolytic Plastic | In English | → Plastic industry |
| RPP | Reliability Program Plan | In English | |
| RPPh | Reports of Progress in Physics | In English | → Serial publications, periodicals → Physics |
| RPS | Record and Playback System | In English | |
| RPS | RMS Planning System | In English | |
| RPSF | Rotation Processing and Surge Facility | In English | |
| RPT | Resident Provisioning Team | In English | |
| RPT | Rudder Pedal Transducer | In English | |
| RPTA | Rudder Pedal Transducer Assembly | In English | |
| RPU | Revenue Per User | In English | → Finance |
| RPU | Rookies Poker University | In English | → Entertainment |
| RPU | Reconfigurable Processing Unit | In English | → Computer hardware |
| RPU | Rochester Public Utilities (www.rpu.org) | In English | → Municipal administration |
| RPU | Related Product Unit | In English | |
| RPV | Remotely Piloted Vehicle | In English | → Vehicle engineering |
| RQ | Renaissance Quarterly | In English | → Serial publications, periodicals → History |
| RQ | Respiratory Quotient | In English | → Medicine |
| RR | Research Review | In English | → Serial publications, periodicals |
| RR | Range Rate | In English | |
| RR | Readiness Review | In English | |
| RR | Register To Register | In English | |
| RR | Rendezvous Radar | In English | → Aeronautics, aircraft → Astronautics |
| RR | Requirements Review | In English | |
| RR | Respiration Rate | In English | → Medicine |
| RRA | Rwanda Revenue Authority (www.rra.gov.rw) | In English | → Economics → Central administration |
| RRA | Rock River Arms (www.rockriverarms.com) | In English | → Mechanical engineering → Military engineering |
| RRA | Rothstein Rosenfeldt Adler (http://rra-law.com) | In English | → Law, jurisprudence |
| RRA | Rockland Repeater Association (www.rra.net) | In English | → Associations → Telecommunications |
| RRA | Religious Research Association (http://rra.hartsem.edu) | In English | → Associations → Religion, theology |
| RRA | Regional Reporters Association (www.rra.or) | In English | → Associations → Newspapers, journalism |
| RRA | Road Records Association (www.rra.org.uk) | In English | → Associations → Sport, physical exercises → United Kingdom |
| RRA | Removal Review Authority (www.removalreviewauthority.govt.nz) | In English | → Law, jurisprudence → Migrations |
| RRA | River Research and Applications | In English | → Serial publications, periodicals → Threats to the environment → Hydrology → Earth sciences |
| RRB | Requirements Review Board | In English | |
| RRC | Roosevelt Rugby Club | In English | → Organizations and associations → Football and rugby |
| RRCEP | Region II Rehabilitation Continuing Education Program | In English | → Education |
| RRDA | Rendezvous Radar Deployment Actuator | In English | → Aeronautics, aircraft → Astronautics |
| RRDAP | Recent Research Development in Applied Physics | In English | → Serial publications, periodicals → Physics |
| RRDBB | Recent Research Development in Biophysics and Biochemistry | In English | → Serial publications, periodicals → Biochemistry, biophysics |
| RRDBC | Recent Research Development in Biophysical Chemistry | In English | → Serial publications, periodicals → Biochemistry, biophysics |
| RRDCP | Recent Research Development in Chemical Physics | In English | → Serial publications, periodicals → Physics → Chemistry |
| RRDCT | Risk Reduction Data Collection Task | In English | → Accidents, risks, safety |
| RRDP | Recent Research Development in Physics | In English | → Serial publications, periodicals → Physics |
| RRDPC | Recent Research Development in Physical Chemistry | In English | → Serial publications, periodicals → Physics → Chemistry |
| RRDPF | Recent Research Development in Physics of Fluids | In English | → Serial publications, periodicals → Fluid mechanics |
| RRDSP | Recent Research Development in Statistical Physics | In English | → Serial publications, periodicals → Physics |
| RREA | Rendezvous Radar Electronics Assembly | In English | → Electronics → Astronautics |
| RREU | Rendezvous Radar Electronics Unit | In English | → Electronics → Astronautics |
| RRG | Role and Reference Grammar | In English | → Linguistics |
| RRIO | Rail-to-Rail Input and Output | In English | → Electronics |
| RRL | Rudder Reference Line | In English | |
| RRM | Requirement and Risk Management | In English | → Management → Accidents, risks, safety |
| RRP | Rudder Reference Plane | In English | |
| RRP | Research Reports in Physics | In English | → Serial publications, periodicals → Physics |
| RRS | Restraint Release System | In English | |
| RRS | Retrorocket System | In English | → Astronautics |
| RRSP | Registered Retirement Savings Plan | In English | → Finance → Labour, labour economics |
| RRT | Rendezvous Radar Transducer | In English | → Astronautics |
| RRT | Rendezvous Radar Transfer | In English | → Astronautics |
| RRT | Rendezvous Radar Transponder | In English | → Astronautics |
| RRW | Reliable Replacement Warhead | In English | → Military engineering |
| RS | Renaissance Studies | In English | → History |
| RS | Redundancy Status | In English | |
| RS | Refurbishment Spare | In English | |
| RS | Register To Storage | In English | |
| RS | Remote Station | In English | |
| RS | Retinoschisis | In English | → Pathology → Ophthalmology |
| RS&S | Receiving, Shipping, and Storage | In English | |
| RS-232 | Recommended Standard 232 | In English | → Standardization → Telecommunications |
| RSA | Renaissance Society of America (www.rsa.org) | In English | → Organizations and associations → History → United States |
| RSA | Rate Sensor Assembly | In English | |
| RSA | Rheometrics Solids Analyzer | In English | → Physics |
| RSC | Royal Society of Chemistry | In English | → Organizations and associations → 64 |
| RSC | Range Safety Command | In English | → Accidents, risks, safety |
| RSC | Range Safety Control | In English | → Accidents, risks, safety |
| RSC | Reimbursement Source Code | In English | |
| RSC | Reference State of Cytoskeleton | In English | → Cytology |
| RScEd | Research in Science Education | In English | → Serial publications, periodicals → Education |
| RScI | Review of Scientific Instruments | In English | → Serial publications, periodicals |
| RSCIE | Remote Station Communication Interface Equipment | In English | → Telecommunications |
| RSCR | Range Safety Command Receiver | In English | → Accidents, risks, safety |
| RSCS | Rate Stabilization and Control System | In English | |
| RSCS | Remote Spooling and Communication Subsystem | In English | → Software → Networks, communication |
| RSCSS | Range Safety Command Shutdown System | In English | → Accidents, risks, safety |
| RSD | Range Support Document | In English | |
| RSD | Requirements and Specifications Document | In English | |
| RSDB | Rockwell Supplier Data Base | In English | |
| RSDP | Remote Site Data Processor | In English | → Data |
| RSE | Royal Society of Edinburgh | In English | → Organizations and associations |
| RSEAM | Rockwell System Engineering Analysis Model | In English | → Engineering, technology |
| RSEIC | Rivers State independent Electoral Commission | In English | → Elections |
| RSEL | Renesas Semiconductor Europe Landshut | In English | → Electronics |
| RSEL | Remote Sensing and Ecology Lab | In English | → Research institutes → 505 |
| RSEnv | Remote Sensing of Environment | In English | → Serial publications, periodicals → Threats to the environment → Earth sciences |
| RSEPS | Royal Society of Edinburgh Proceedings Section | In English | → Serial publications, periodicals |
| RSF | Receiving-Safing Facility | In English | |
| RSF | Refurbishment and Subassembly Facility | In English | |
| RSI | Rate Stability Indicator | In English | |
| RSI | Reusable Surface Insulation | In English | |
| RSI | Rádio Slovakia International (www.slovakradio.sk/inetportal/rsi/) = RSI | Radio Slovaquie Internationale | In French |
In English | → Telecommunications → Slovakia |
| RSIOP | Russian Strategic Integrated Operational Plan | In English | → Russia |
| RSL | Requirements Specification Language | In English | → Programming languages → Management |
| RSL | Resource Support List | In English | → Maintenance and logistics |
| RSL | Recurring Slope Lineae | In English | → Planets and satellites |
| RSL | Regulator of Sex Limited Protein | In English | → Proteins |
| RSL | Reference State of Lipid bilayer | In English | → Cytology |
| RSL | Radioactive Seed Localization | In English | → Diagnostics → Oncology |
| RSLS | Redundant Set Launch Sequence | In English | → Astronautics |
| RSMM | Redundant System Monitor Model | In English | |
| RSN | Real Soon Now | In English | → Serial publications, periodicals → Literature |
| RSN | Robust Security Network | In English | → Networks, communication → Telecommunications |
| RSN | Réseau Sécurité Naissance (www.reseau-naissance.com) | In English | → Organizations and associations → Obstetrics → Pediatry |
| RSN | Reactive Sensor Networks | In English | → Electronics |
| RSN | Renal Support Network (www.rsnhope.org) | In English | → Organizations and associations → Pathology |
| RSN | Romanian Society of Neurosurgery (www.rsn.ro) | In English | → Organizations and associations → Neurology → Surgery, orthopaedics, ophthalmology → Romania |
| RSN | Refuser Solidarity Network (www.refusersolidarity.net) | In English | → Organizations and associations → Politics → Military affairs |
| RSN&R | Royal Society of London Notes & Records | In English | → Organizations and associations → Serial publications, periodicals → United Kingdom |
| RSNA | Radiological Society of North America (www.rsna.org) | In English | → Organizations and associations → Medicine |
| RSNSW | Royal Society of New South Wales (http://nsw.royalsoc.org.au) | In English | → Organizations and associations → Mathematics and natural sciences → Australia |
| RSO | Radiological Safety Office | In English | → Accidents, risks, safety → Radioactivity |
| RSO | Range Safety Officer | In English | → Accidents, risks, safety |
| RSO | Resident Space Object | In English | → Astronomy → Astronautics |
| RSOC | Rockwell Space Operations Company | In English | → Astronautics |
| RSP | Research Subjects Protection | In English | → Research policy |
| RSPAS | Research School of Pacific and Asian Studies | In English | → Higher education, universities → Area studies |
| RSPB | Royal Society for the Protection of Birds | In English | → Organizations and associations → Environmental protection |
| RSPCA | Royal Society for the Prevention of Cruelty to Animals (www.rspca.org.uk) | In English | → Organizations and associations → 5023 → United Kingdom |
| RSPL | Recommended Spare Parts List | In English | → Maintenance and logistics |