| QIS | Qualcomm Internet Services | In English | → Internet |
| QLDS | Quick-Look Data Station | In English | → Data |
| QMS | Quality Management System | In English | → Quality management |
| QO | Qualification Opérationnelle | In French | → Quality management |
| QOM | Quick Ontology Mapping | In English | → Software |
| QOS | Quality Operating System | In English | → Quality management |
| QP | Qualification des Performances | In French | → Quality management |
| QPD | Quality Planning Document | In English | → Quality management |
| QPL | Qualified Products List | In English | → Maintenance and logistics |
| QPL | Qualified Parts List | In English | → Maintenance and logistics |
| QPP | Quality Program Plan | In English | → Quality management |
| QPR | Quarterly Progress Report | In English | → Management |
| QPRD | Quality Program Requirements Document | In English | → Quality management |
| QPRD | Quality Planning Requirements Document | In English | → Quality management |
| QPRH | Quality Planning Requirements Handbook | In English | → Quality management |
| QPSD | Quality and Productivity Systems Division | In English | → Quality management |
| QS | Quality System | In English | → Quality management |
| QSAE | Quality and Standards Authority of Ethiopia | In English | → Standardization |
| QSE | Qualité, Sécurité, Environnement | In French | → Quality management |
| QUADS | Quality Achievement Data System | In English | → Quality management |
| QUCC | Quaderni Urbinati di Cultura Classica | In Italian | → Serial publications, periodicals → Civilization, culture, progress → Language, linguistics, literature |
| QUIC | Quality Information Control | In English | → Quality management |
| QUIC | Quality Data Information and Control | In English | → Quality management → Data |
| QUP | Quality Unit Pack | In English | → Quality management |
| R&D | Research and Development = R&D | Recherche et développement | In French = F&E | Forschung und Entwicklung | In German = I+D | Investigación y Desarrollo | In Spanish = R&S | Ricerca e Sviluppo | In Italian = P&D | Pesquisa e Desenvolvimento | In Portuguese = O&O | Onderzoek en Ontwikkeling | In Dutch = FoU | Forsøk og Utvikling | In Norwegian |
In English | → Research policy → Engineering, technology |
| R&D | Recherche et développement = F&E, I+D, R&S, P&D, O&O, FoU (look above) |
In French | → Research policy → Engineering, technology |
| R&DO | Research and Development Operations | In English | → Research policy → Engineering, technology |
| R&E | Research and Engineering | In English | → Research policy → Engineering, technology |
| R&PM | Research and Program Management | In English | → Research policy |
| R&QA | Reliability and Quality Assurance | In English | → Quality management |
| R&S | Ricerca e Sviluppo = R&D, F&E, I+D, P&D, O&O, FoU (look above) |
In Italian | → Research policy → Engineering, technology |
| R&T | Research and Technology | In English | → Research policy → Engineering, technology |
| R2I | Réseau Industriel d'Innovation | In French | → Research policy → Industry, industrial policy → Engineering, technology |
| R3S | Rapid Records Retrieval System | In English | → Knowledge management |
| R@S | Réseau Associatif et Syndical | In French | → Networks, communication |
| RAAP | Red Académica Peruana | In Spanish | → Computer science → Higher education, universities → Telecommunications |
| RACF | Resource Access Control Facility | In English | → Software |
| RAD | Research and Advanced Development | In English | → Research policy → Engineering, technology |
| RADAR | Résultats, Approche, Déploiement, Appréciation, Revue | In French | → Quality management |
| RADOP | Radiator Optimization Computer Code | In English | → Software |
| RAGIE | Red Avanzada Guatemalteca para la Investigación y Educación | In Spanish | → Computer science → Education → Mathematics and natural sciences → Telecommunications |
| RAICES | Red Avanzada de Investigación, Ciencia y Educación Salvadoreña | In Spanish | → Computer science → Education → Mathematics and natural sciences → Telecommunications |
| RAID | Redundant Array of Independent Disks | In English | → Memories |
| RAID | Redundant Array of Independant Disks | In English | → Memories |
| RAM | Random Access Memory | In English | → Memories |
| RAM | Reliability Assessment Model | In English | → Quality management |
| RAMDAC | Random Access Memory Digital to Analog Converter | In English | → Memories |
| RAMP | Replenishment Activity Management Plan | In English | → Management |
| RAMPS | Resource Analysis and Mission Planning System | In English | → Management |
| RANN | Research Applied to National Needs | In English | → Research policy → Engineering, technology |
| RAP | Reliability Assurance Program | In English | → Quality management |
| RAP | Reconnaissance Automatique de la Parole = ASR | Automatic Speech Recognition | In English |
In French | → Computer-based techniques → Linguistics |
| RAPP | Resource and Planning Program | In English | → Management |
| RAPRIA | Russian Federation Association for Pattern Recognition and Image Analysis | In English | → Organizations and associations → Graphical processing → Image processing |
| RAQ | Responsable Assurance Qualité | In French | → Quality management |
| RAR | Resource Accommodation Report | In English | → Management |
| RARP | Reverse Address Resolution Protocol | In English | → Internet |
| RASMUS | Remote Accessible Software configurable Multi-channel Ultrasound Sampling system | In English | → Software → Diagnostics |
| RAU | Red Académica Uruguaya | In Spanish | → Computer science → Higher education, universities → Telecommunications |
| RAX | Remote Access Terminal | In English | → Human-computer interaction |
| RAX | Remote Access Computing System | In English | → Hardware |
| RC | Ricerca e Cooperazione | In Italian | → Organizations and associations → Research policy → International relations |
| RCL | Reliability Control Level | In English | → Quality management |
| RCM | Reliability-Centered Maintenance | In English | → Quality management → Maintenance and logistics |
| RCP | Rich Client Platform | In English | → Software |
| RCP | Rémunération pour Copie Privée | In French | → Software → Cinema, movies |
| RCS | Revision Control System | In French | → Software |
| RCSO-TIC | Réseau de Compétences de Suisse Occidentale en Technologie de l'Information et de la Communication | In French | → Computer science → Telecommunications |
| RDA | Rich Desktop Application | In English | → Software |
| RDA | Resident Data Area | In English | → Data |
| RDA | Remote Data Access | In English | → Data → Networks, communication |
| RDBMS | Relational Database Management System |
In English | → Data → Knowledge management |
| RDDL | Resource Directory Description Language | In English | → Programming languages → Data |
| RDF | Ressource Description Format | In English | → Data |
| RDF | Resource Data File | In English | → Data |
| RDF | Resource Description Framework | In English | → Data → Networks, communication |
| RDGS | Reconfiguration Display Generation System | In English | → Human-computer interaction |
| RDM | Real-Time Data Manager | In English | → Software → Data |
| RDO | Relational Database Operator | In English | → Data |
| RDOS | Real-Time Disk Operating System | In English | → Operating systems |
| RDR | Raw Data Recorder | In English | → Data |
| REACCIUN | Red Académica de Centros de Investigación y Universidades Nacionales | In Spanish | → Computer science → Education → Telecommunications |
| RECON | Remote Console | In English | → Human-computer interaction |
| RedCYT | Red Científica y Tecnológica | In Spanish | → Computer science → Mathematics and natural sciences → Applied sciences, technology → Telecommunications |
| RENATA | Red Nacional Académica de Tecnología Avanzada | In Spanish | → Computer science → Telecommunications |
| RENATER | Réseau National de Télécommunication pour la Technologie, l'Enseignement et la Recherche | In French | → Research policy → Networks, communication → Education → Engineering, technology |
| RENIA | Red Nicaragüense de Internet Avanzada | In Spanish | → Computer science → Telecommunications |
| RER | Réseau Europe Régions | In French | → Research policy → Regional administration |
| RERS | Réseau d'Échanges Réciproques de Savoirs | In French | → Science and knowledge → Organizations and associations |
| REST | Representational State Transfer | In English | → Computer science |
| RET | Resolution Enhancement Technology | In English | → Peripheral devices → Graphic industries, printing, publishing |
| RETINA | Red TeleInformática Académica | In Spanish | → Computer science → Telecommunications |
| REUNA | Red Universitaria Nacional | In Spanish | → Computer science → Higher education, universities → Telecommunications |
| REVES | Rendu et Environnements VirtuEls Sonorisés | In French | → Computer-based techniques |
| REX | Remote Events for XML | In English | → Software → Networks, communication |
| RFCP | Request For Computer Program | In English | → Software |
| RFDU | Radio Frequency and Digital Unit | In English | → Computer science → Telecommunications |
| RFHA | Reusable Flight Hardware Authorization | In English | → Hardware → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| RFI | Remote File Inquiry | In English | → Software |
| RFIA | Reconnaissance des Formes et Intelligence Artificielle | In French | → Congresses → Artificial intelligence → Computer-based techniques |
| RFID | Radio Frequency Identification | In English | → Computer science → Telecommunications |
| RFT | Rat für Forschung und Technologie | In German | → Research policy → Engineering, technology |
| RFT | Rat für Forschung und Technologieentwicklung (www.rat-fte.at) | In German | → Research policy → Engineering, technology |
| RFTA | Reverse Fault Tree Analysis | In English | → Quality management |
| RGC | Réalisation interne à Géométrie Contrainte | In French | → Computer-based techniques |
| RGC | Research and Graduate College | In English | → Research policy → Education |
| RGC | Retro-Gaming Connexion | In English | → Software → Entertainment |
| RGC | Research Grants Council | In English | → Organizations and associations → Research policy |
| RGD | Régie de Gestion des Données | In French | → Public administration, government → Computer science → Knowledge management |
| RHEC | Radiation-Hardened Emulating Computer | In English | → Hardware |
| RIA | Rich Internet Application | In English | → Software → Networks, communication |
| RIA | Rich Internet Applications | In English | → Software → Networks, communication |
| RIAM | Recherche et Innovations en Audiovisuel et Multimédia | In French | → Computer-based techniques → Cinema, movies |
| RIAP | Rural Internet Access Point | In English | → Networks, communication |
| RIC | Reta Informado-Centro | In Esperanto | → Libraries → Networks, communication |
| RICAM | Johann Radon-Institut für computerorientierte und angewandte Mathematik | In German | → Research institutes → Computer science → Mathematics |
| RICC | Remote Intercomputer Communications | In English | → Networks, communication → Telecommunications |
| RICP | Real-Time Interactive Computer Program | In English | → Software |
| RIDS | Rockwell Integrated Defense Simulator | In English | → Military affairs → Computer simulation |
| RIE | Righi Interface Engineering | In English | → Human-computer interaction |
| RIM | Resource Inventory Management | In English | → Maintenance and logistics |
| RIMS | Resource Inventory Management System | In English | → Maintenance and logistics |
| RIP | Raster Image Processor | In English | → Graphical processing → Image processing |
| RIP | Routing Information Protocol | In English | → Networks, communication |
| RIS | Revue, Informatique et Statistique dans les sciences humaines | In French | → Serial publications, periodicals → Computer-based techniques → Social sciences → Statistics |
| RIS | Rauminformationssystem | In German | → Software → Geography |
| RIS | Research Information Systems | In English | → Research policy → Knowledge management |
| RIS | Rechtsinformationssystem | In German | → Data → Law, jurisprudence |
| RISC | Reduced Instruction Set Computer | In English | → Hardware |
| RIT | Request for Interface Tooling | In English | → Human-computer interaction |
| RITA | Research and Innovative Technology Administration (www.rita.dot.gov) | In English | → Central administration → Research policy → Transport and postal services |
| RIU | Remote Interface Unit | In English | → Human-computer interaction |
| RM | Redundancy Management | In English | → Management |
| RM | Remedial Maintenance | In English | → Maintenance and logistics |
| RM | Resource Management | In English | → Maintenance and logistics |
| RM&P | Reliability, Maintainability, and Producibility | In English | → Maintenance and logistics |
| RM&QA | Reliability, Maintainability, and Quality Assurance | In English | → Quality management → Maintenance and logistics |
| RM/AS | Risk Management/Assessment System | In English | → Management |
| RMA | Reliability, Maintainability, and Availability | In English | → Maintenance and logistics |
| RMB | Regionalmanagement Burgenland | In German | → Management |
| RMI | Remote Method Invocation | In English | → Networks, communication |
| RMOP | Resource Management Operation Plan | In English | → Maintenance and logistics |
| RMP | Risk Management Plan | In English | → Management |
| RMRS | Repeatable Maintenance Recall System | In English | → Maintenance and logistics |
| RMRS | Recoverable Maintenance Recall System | In English | → Maintenance and logistics |
| RMS | Random Motion Simulator | In English | → Computer simulation |
| RMS | Redundancy Management System | In English | → Management |
| RNIL | Réseau National d'Ingénierie Linguistique | In French | → Computer-based techniques → Linguistics |
| RNP | Rede Nacional de Ensino e Pesquisa | In Portuguese | → Computer science → Telecommunications |
| RNRE | Réseau National de Recherche et d'Éducation | In French | → Research policy → Networks, communication → Education |
| RNTL | Réseau National de Recherche et d'Innovation en Technologies Logicielles | In French | → Software |
| RNTL | Réseau National des Technologies Logicielles | In French | → Organizations and associations → Software |
| ROC | Reconnaissance Optique de Caractères = ORC | Optical Character Recognition | In English |
In French | → Writing systems → Computer-based techniques |
| ROLAP | Relational On Line Analytical Processing | In English | → Knowledge management → Data |
| ROM | Read Only Memory | In English | → Memories |
| ROS | Read-Only Storage | In English | → Memories |
| ROSES | Rockwell Operational Software Engineering System | In English | → Software |
| RPN | Risk Priority Number | In English | → Quality management |
| RRIT | Réseau de Recherche et d'Innovation Technologique | In French | → Research policy → Engineering, technology |
| RRM | Requirement and Risk Management | In English | → Management |
| RRQ | Responsable Régional Qualité | In French | → Quality management |
| RS-232 | Recommended Standard 232 | In English | → Standardization → Telecommunications |
| RSCS | Remote Spooling and Communication Subsystem | In English | → Software → Networks, communication |
| RSDP | Remote Site Data Processor | In English | → Data |
| RSL | Resource Support List | In English | → Maintenance and logistics |
| RSN | Robust Security Network | In English | → Networks, communication → Telecommunications |
| RSPL | Recommended Spare Parts List | In English | → Maintenance and logistics |
| RSS | Really Simple Syndication | In English | → Networks, communication |
| RSS | RDF Site Summary | In English | → Networks, communication |
| RSSI | Responsable de la Sécurité des Systèmes d'Information = CISO | Chief Information Security Officer | In English |
In French | → Computer science |
| RST | Recessed Selectomatic Terminal | In English | → Human-computer interaction |
| RSTP | Rapid Spanning Tree Protocol | In English | → Networks, communication → Telecommunications |
| RSU | Remote Service Unit | In English | → Networks, communication |
| RTAC | Research and Technology Advisory Committee | In English | → Organizations and associations → Research policy → Engineering, technology |
| RTC | Real-Time Computer | In English | → Hardware |
| RTC | Real-Time Clock | In English | → Computer science |
| RTCC | Real-Time Computer Complex | In English | → Hardware |
| RTCC | Real-Time Computer Center | In English | → Hardware |
| RTCC | Real-Time Computer Command | In English | → Hardware |
| RTCP | Real-Time Communications Processor | In English | → Hardware → Telecommunications |
| RTCPS | Real-Time Computer Program System | In English | → Software |
| RTCS | Real-Time Computer System | In English | → Hardware → Software |
| RTD | Real-Time Data | In English | → Data |
| RTD | Real-Time Display | In English | → Human-computer interaction |
| RTD | Research, Technology and Development | In English | → Research policy → Engineering, technology |
| RTF | Rich Text Format | In English | → Document processing |
| RTFSS | Real-Time Flight Safety Software | In English | → Software → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| RTIF | Real-Time Interface | In English | → Human-computer interaction |
| RTM | Réseaux, Télécoms et Multimedia | In French | → Networks, communication → Document processing → Telecommunications |
| RTN | Research Training Network | In English | → Research policy → Education |
| RTOLAP | Real-Time On Line Analytical Processing | In English | → Knowledge management → Data |
| RTOP | Research and Technology Objectives and Plans | In English | → Research policy → Engineering, technology |
| RTOP | Research and Technology Operating Plan | In English | → Research policy → Engineering, technology |
| RTPM | Real-Time Program Management | In English | → Management |
| RTRA | Réseau Thématique de Recherche Avancée | In French | → Research policy |
| RTS | Real-Time Strategy = STR | Stratégie en Temps Réél | In French |
In English | → Computer science → Entertainment |
| RTSF | Real-Time Simulation Facility | In English | → Computer simulation |
| RTSS | Real-Time Simulation System | In English | → Computer simulation |
| RTT | Round Trip Time | In English | → Networks, communication |
| RTU | Remote Terminal Unit | In English | → Human-computer interaction |
|