

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| QS | Qualité Sûreté | In French | → Quality management | 
| QSE | Qualité, Sécurité, Environnement | In French | → Quality management → Environmental technology, water supply, waste management | 
| QSII | Qualité et Sécurité des Installations Intérieures | In French | → Quality management | 
| R | Arginine = R | Arginine | In English = R | Arginina | In Catalan = R | Arginin | In Czech = R | Arginin | In German = R | Arginina | In Spanish = R | Arginino | In Esperanto = R | 아르기닌 | In Korean = R | Arginin | In Croatian = R | Arginin | In Indonesian = R | Arginina | In Italian = R | ארגינין | In Hebrew = R | Arginīns | In Latvian = R | Arginin | In Letzeburgesh = R | Argininas | In Lithuanian = R | Arginine | In Dutch = R | アルギニン | In Japanese = R | آرګېنين | In Pashto = R | Arginina | In Polish = R | Arginina | In Portuguese = R | Аргинин | In Russian = R | Arginín | In Slovak = R | Arginiini | In Finnish = R | Arginin | In Swedish = R | Arginin | In Turkish = R | Аргінін | In Ukrainian = R | 精氨酸 | In Chinese | In French | → Biochemistry, biophysics | 
| R&D | Recherche et développement = F&E | Forschung und Entwicklung | In German = R&D | Research and Development | In English = 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 French | → Research policy → Engineering, technology | 
| R&T | Réseaux & Télécoms | In French | → Networks, communication → Telecommunications | 
| R2DS | Réseau Francilien de Recherche sur le Développement Soutenable | In French | → Organizations and associations → Research policy | 
| R2I | Réseau Industriel d'Innovation | In French | → Research policy → Industry, industrial policy → Engineering, technology | 
| R2ITH | Réseau Industriel d'Innovation du Textile et de l'Habillement | In French | → Textile industry | 
| R@S | Réseau Associatif et Syndical | In French | → Networks, communication | 
| RA | Revue d'Assyriologie et d'archéologie orientale | In French | → Serial publications, periodicals → Archeology → History | 
| RA | Renseignement Annexe | In French | |
| RA | Réflexion Analytique | In French | |
| RA | Rubrique d'Activité | In French | |
| RA | Régiment d'Artillerie | In French | → Military affairs | 
| RAADIS | Réseau pour une Agriculture et une Alimentation Durables Inventives et Solidaires | In French | → Organizations and associations → Agricultural sciences → Food technology | 
| RACC | Racing Athlétic Club Cheminots | In French | → Organizations and associations → Sport, physical exercises | 
| RADAR | Résultats, Approche, Déploiement, Appréciation, Revue | In French | → Management | 
| RAEP | Reconnaissance des Acquis de l'Expérience Professionnelle | In French | → Labour, labour economics | 
| RAéS | Réseau Recherche Aéronautique sur le Supersonique | In French | → Aeronautics, aircraft | 
| RAG | Réseau d'Alimentation Générale | In French | → Energy economics → France | 
| RAI | Rencontre Assyriologique Internationale | In French | → Archeology | 
| RAI | Mouvement des Jeunes Socialistes (www.mjsfrance.org) | In French | → Socialist parties | 
| RAI | Résultat Avant Impôt | In French | → Accounting → Taxes, duties | 
| RAISIN | Réseau d'Alerte, d'Investigation et de Surveillance des Infections Nosocomiales | In French | → Organizations and associations → Infectious diseases | 
| RAISOM | Réseaux de collecte IP Sans Fil Optimisés | In French | → Networks, communication → Telecommunications | 
| RAMC | Régime Canadien d'Accès aux Médicaments = CAMR | Canada's Access to Medicines Regime | In English | In French | → Pharmacology, toxicology → Canada | 
| RAMEAU | Répertoire d'Autorité-Matière Encyclopédique et Alphabétique Unifié | In French | → Documentation → Encyclopaedias, reference works | 
| RAN | Report À Nouveau | In French | → Accounting | 
| RAOU | Recherches Astronomiques de l'Observatoire d'Utrecht | In French | → Serial publications, periodicals → Astronomy → Netherlands | 
| RAP | Reconnaissance Automatique de la Parole = ASR | Automatic Speech Recognition | In English | In French | → Computer-based techniques → Linguistics | 
| RAP | Reprise des Amortissements et Provisions | In French | → Accounting | 
| RAP | Régime d'Accession à la Propriété | In French | → Accommodation | 
| RAP | Rapport Annuel de Performance | In French | → Management | 
| RAPACE | Répertoire Automatisé Pour l'Analyse des Contrefaçons de l'Euro | In French | → Police | 
| RAPACE | Réseaux Accédant par PAsserelle aux CEntraux | In French | |
| RAQ | Responsable Assurance Qualité | In French | → Quality management | 
| RAQPA | Résidence d'Accueil de Quartier pour Personnes Agées | In French | → Accommodation → Gerontology | 
| RARE | Réseau de recherche et d'innovation technologique 'Alimentation Référence Europe' | In French | → Nutrition → Food technology | 
| RAS | Remontée Aéro-Souterraine | In French | → Energy economics → Electrical engineering | 
| RASED | Réseau d'Aides Spécialisées aux Élèves en Difficulté scolaire | In French | → Education | 
| RASIT | Radar de Surveillance des Intervalles | In French | |
| RATP | Régie Autonome des Transports Parisiens (www.ratp.fr) | In French | → Transport and postal services → France | 
| RATP | Réseau pour l'Abolition des Transports Payants | In French | → Organizations and associations → Transport and postal services | 
| RAV | Reste À Ventiler | In French | → Accounting | 
| RAVeL | Réseau Autonome des Voies Lentes | In French | → Transport and postal services | 
| RAVIOLI | RAdar Vision Orienté LIdar | In French | |
| RAY | République Arabe du Yémen = JAR | Jemenitische Arabische Republik | In German = YAR | Yemen Arab Republic | In German = JAR | Jemenitische Arabische Republiek | In Dutch = RAI | República Árabe do Iémen | In Portuguese | In French | → Geography | 
| RB | Revue Biblique | In French | → Serial publications, periodicals → Religion, theology | 
| Rb | Rubidium = Rb | Rubidium | In Afrikaans = Rb | روبيديوم | In Arabic = Rb | Рубідый | In Belarusian = Rb | Рубидий | In Bulgarian = Rb | রুবিডিয়াম | In Bengali = Rb | Rubidijum | In Bosnian = Rb | Rubidi | In Catalan = Rb | Rubidiu | In Corsican = Rb | Rubidium | In Czech = Rb | Rwbidiwm | In Welsh = Rb | Rubidium | In Danish = Rb | Rubidium | In German = Rb | Ρουβίδιο | In Greek = Rb | Rubidium | In English = Rb | Rubidio | In Esperanto = Rb | Rubidio | In Spanish = Rb | Rubiidium | In Estonian = Rb | Rubidio | In Basque = Rb | روبیدیوم | In Persian = Rb | Rubidium | In Finnish = Rb | Rubidi | In Friulian = Rb | Rúbaidiam | In Irish = Rb | Rubidio | In Galician = Rb | Rubiddjum | In Manx = Rb | רובידיום | In Hebrew = Rb | रुबिडियम | In Hindi = Rb | Rubidij | In Croatian = Rb | Rubídium | In Hungarian = Rb | Ռուբիդիում | In Armenian = Rb | Rubidium | In Indonesian = Rb | Rubidio | In Ido = Rb | Rúbidín | In Icelandic = Rb | Rubidio | In Italian = Rb | ルビジウム | In Japanese = Rb | xunsodna | In Lojban = Rb | Rubidium | JV = Rb | ರುಬಿಡಿಯಮ್ | In Kannada = Rb | 루비듐 | In Korean = Rb | Rûbîdyûm | In Kurdish = Rb | Rubidium | In Latin = Rb | Rubidium | In Letzeburgesh = Rb | Rubidis | In Lithuanian = Rb | Rubīdijs | In Latvian = Rb | റൂബിഡിയം | In Malayalam = Rb | Rubidium | In Dutch = Rb | Rubidium | In Nynorsk = Rb | Rubidium | In Norwegian = Rb | Rubidi | In Occitan = Rb | Rubid | In Polish = Rb | Rubídio | In Portuguese = Rb | Rubidyu | In Quechua = Rb | Rubidiu | In Romanian = Rb | Рубидий | In Russian = Rb | Rubidiu | In Sicilian = Rb | Rubidijum | In Serbo-Croatian = Rb | Rubídium | In Slovak = Rb | Rubidij | In Slovenian = Rb | Рубидијум | In Serbian = Rb | Rubidium | In Swedish = Rb | Rubidi | In Swahili = Rb | ருபீடியம் | In Tamil = Rb | รูบิเดียม | In Thai = Rb | Rubidyum | In Turkish = Rb | Рубідій | In Ukrainian = Rb | Rubidiy | In Uzbek = Rb | Rubidi | In Vietnamese = Rb | Rubidiom | In Walloon = Rb | 铷 | In Chinese | In French | → Chemistry | 
| RB | Rapprochement Bancaire | In French | → Banks | 
| RC | Repos Compensateur | In French | → Personnel management → Labour, labour economics | 
| RC | Rémunération Complémentaire | In French | → Personnel management → Labour, labour economics | 
| RC | Responsabilité Civile | In French | → Insurance | 
| RC | Revenu Cadastral | In French | → Taxes, duties | 
| RCA | Rugby Club Auxerrois | In French | → Organizations and associations → Football and rugby | 
| RCA | Responsabilité Civile Accident | In French | → Insurance → Accidents, risks, safety | 
| RCACP | Rugby Club Agglomération Cergy Pontoise | In French | → Organizations and associations → Football and rugby | 
| RCAI | Résultat Courant avant Impôt | In French | → Accounting → Taxes, duties | 
| RCAV | Rugby Club Aubenas Vals | In French | → Organizations and associations → Football and rugby | 
| RCB | Réseau Complémentaire de Bassin | In French | → Hydrology | 
| RCC | Rugby Club Châteaurenard | In French | → Organizations and associations → Football and rugby | 
| RCC-C | Règles de Conception et de Construction des Assemblages de Combustible des Centrales Nucléaires | In French | → Nuclear technology | 
| RCC-E | Règles de Conception et de Construction des Matériels Électriques des Centrales Nucléaires | In French | → Nuclear technology | 
| RCC-G | Règles de Conception et de Construction du Génie Civil des Îlots Nucléaires REP | In French | → Nuclear technology | 
| RCC-M | Règles de Conception et de Construction des Matériels Mécaniques des Îlots Nucléaires REP | In French | → Nuclear technology | 
| RCC-MR | Règles de Conception et de Construction des Matériels Mécaniques des Îlots Nucléaires RNR | In French | → Nuclear technology | 
| RCD | Rugby Club Dijonnais | In French | → Organizations and associations → Football and rugby | 
| RCD | Réacteur Complétement Déchargé | In French | → Nuclear technology | 
| RCDÉC | Réseau Canadien de Développement Économique Communautaire (www.ccednet-rcdec.ca) | In French | → Organizations and associations → Economics | 
| RCEA | Revue Canadienne des Études Africaines | In French | → Serial publications, periodicals → Area studies → Canada | 
| RCF | Rassemblement des Contribuables Français | In French | → Political parties and movements → France | 
| RCF | Radios Chrétiennes en France | In French | → Organizations and associations → Telecommunications → Christianity → France | 
| RCFI | Rugby Club de Flandre Intérieure | In French | → Organizations and associations → Football and rugby | 
| RCGC | Rugby Club Grand-Couronnais | In French | → Organizations and associations → Football and rugby | 
| RCGM | Rugby Club Grande Motte | In French | → Organizations and associations → Football and rugby | 
| RCM | Rugby Club de Montréal | In French | → Organizations and associations → Football and rugby | 
| RCMD | Rugby Club Municipal Déolois | In French | → Organizations and associations → Football and rugby | 
| RCNM | Racing Club Narbonne Méditerranée | In French | → Organizations and associations → Football and rugby | 
| RCO | Rencontres de Chimie Organique | In French | → Congresses → Organic chemistry | 
| RCO | Radio Comptoir de l'Ouest | In French | → Trade → Electronics | 
| RCO | Rugby Club Orléans (www.rcorleans.com) | In French | → Organizations and associations → Football and rugby → France | 
| RCO | Rencontres Chimiques de l'Ouest | In French | → Congresses → Chemistry | 
| RCO | Renseignement Contraignant sur l'Origine | In French | → Trade | 
| RCO | Rugby Club Orangeois | In French | → Organizations and associations → Football and rugby | 
| RCO | Retraite Complémentaire Obligatoire | In French | → Insurance → Labour, labour economics | 
| RCP | Réanimation cardiopulmonaire | In French | → Traumatology | 
| RCP | Résumé des Caractéristiques du Produit = SPC | Summary of Product Characteristics | In English | In French | → Pharmacology, toxicology | 
| RCP | Rugby Club de Plabennec | In French | → Organizations and associations → Football and rugby | 
| RCP | Rémunération pour Copie Privée | In French | → Software → Cinema, movies | 
| RCP | RCP : Réanimation Cardio-Pulmonaire | In French | → Cardiology → Traumatology | 
| RCPGs | Récepteurs Couplés aux Protéines-G | In French | → Proteins | 
| RCS | Revision Control System | In French | → Software | 
| RCS | Registre du Commerce et des Sociétés | In French | → Economic policy → Trade | 
| RCS | Racing Club de Strasbourg | In French | → Organizations and associations → Sport, physical exercises | 
| RCS | Registre Commercial des Sociétés | In French | → Economics | 
| RCS | Roux-Combaluzier-Schindler | In French | → Mechanical engineering | 
| RCSO-TIC | Réseau de Compétences de Suisse Occidentale en Technologie de l'Information et de la Communication | In French | → Computer science → Telecommunications → Switzerland | 
| RCTT | Réduction Collective du Temps de Travail | In French | → Personnel management → Labour, labour economics | 
| RCVMT | Rugby Club Vif Monestier Trièves | In French | → Organizations and associations → Football and rugby | 
| RD | Rassemblement Démocrate | In French | → Political parties and movements | 
| RD | Rétinopathie Diabétique | In French | → Pathology → Ophthalmology | 
| RD | Route Départementale | In French | → Civil engineering and land transport → Transport and postal services | 
| RDA | République Démocratique Allemande = GDR | Germana Demokratia Respubliko | In Esperanto = RDA | Republik Demokratel Alamagn | In Breton = RDA | República Democrática Alemana | In Spanish = DDR | Deutsche Demokratische Republik | In German = DDR | Duitse Demokratiese Republiek | In Afrikaans = NDR | Njemačka Demokratska Republika | In Bosnian = RDA | República Democràtica Alemanya | In Catalan = NDR | Německá demokratická republika | In Czech = ГДР | Германи Демократиллĕ Республики | In Chuvash = ΛΔΓ | Λαϊκή Δημοκρατία της Γερμανίας | In Greek = GDR | German Democratic Republic | In English = AED | Alemaniar Errepublika Demokratikoa | In Basque = NDK | Német Demokratikus Köztársaság | In Hungarian = RDT | Repubblica Democratica Tedesca | In Italian = DDR | Duitse Democratische Republiek | In Dutch = RDG | Republica Democrată Germană | In Romanian = DAC | Demokratik Alman Cumhuriyeti | In Turkish | In French | → Geography → Germany | 
| RDA | Rassemblement Démocratique Africain | In French | → Political parties and movements → Africa | 
| RDBP | Robinet Déclencheur Basse Pression | In French | |
| RDC | République Démocratique du Congo | In French | → Geography | 
| RDC | Rez-De-Chaussée | In French | → Accommodation → Construction | 
| RDCIC | Rémunération de la Disponibilité et de la Contribution Individuelle des Cadres | In French | → Personnel management → Labour, labour economics | 
| RDI | Radar Doppler à Impulsions | In French | → Engineering, technology | 
| RDP | Régiment de Dragons Parachutistes | In French | → Military affairs | 
| RDR | Règlement de Développement Rural | In French | → Agricultural sciences → Regional planning | 
| RDT | Réseau de Développement Technologique | In French | → Engineering, technology | 
| RDTC | Réseau de Développement Technologique Corse | In French | → Engineering, technology | 
| RE | Revue d'Égyptologie | In French | → Serial publications, periodicals → Archeology | 
| ReAA | Recherches Aéronautiques et Aérospatiales | In French | → Serial publications, periodicals → Aeronautics, aircraft → Astronautics | 
| REB | Réacteur à Eau Bouillante = BWR | Boiling Water Reactor | In English = SWR | Siedewasserreaktor | In German | In French | → Nuclear technology | 
| RecAug | Recherches Augustiniennes | In French | → Serial publications, periodicals → Religion, theology | 
| RECIFE | REcherche sur la Capacité des Infrastructures FErroviaires | In French | → Rail transport engineering → Rail transport → France | 
| RECITS | Recueil des Eléments de Connaissances Interdisciplinaires sur les Transports et leur Sécurité | In French | → Transport and postal services | 
| RecSR | Recherches de Sciences Religieuses | In French | → Serial publications, periodicals → Religion, theology | 
| RéDI | Réseau des Doctorants de l'INRETS | In French | → Organizations and associations → Higher education, universities → Transport and postal services | 
| REE | Relevé d'Exécution d'Essais | In French | |
| REER | Régime Enregistré d'Épargne-Retraite | In French | → Finance → Labour, labour economics | 
| RefERE | Réseau francophone international de recherche en Éducation Relative à l'Environnement (www.refere.uqam.ca) | In French | → Organizations and associations → Education → Threats to the environment | 
| REFIDI | Résidus d'Épuration des Fumées d'Incinérateur de Déchets Industriels | In French | → Environmental technology, water supply, waste management | 
| REFIOM | Résidus d'Épuration des Fumées d'Incinérateur d'Ordures Ménagères | In French | |
| REFIOM | Résidu de Fumée d'Incinération d'Ordures Ménagères | In French | → Environmental technology, water supply, waste management | 
| REG | Revue des Études Grecques | In French | → Serial publications, periodicals → Language, linguistics, literature | 
| REG | Régie des Eaux de Grenoble | In French | → Environmental technology, water supply, waste management | 
| REG | Résistances Électriques et Gazières | In French | → Electrical engineering | 
| REI | Revue des Études Islamiques | In French | → Serial publications, periodicals → Islam | 
| REI | Recherche Exploratoire et Innovation | In French | → Research policy | 
| REJ | Revue des Études Juives | In French | → Serial publications, periodicals → Social welfare | 
| REL | Revue des Études Latines | In French | → Serial publications, periodicals → Language, linguistics, literature | 
| REM | Renseignement d'État-Major | In French | → Military affairs | 
| REMMM | Revue du Monde Musulman et de la Méditerranée | In French | → Serial publications, periodicals → Area studies | 
| REMMM | Revue des Mondes Musulmans et de la Méditerranée | In French | → Serial publications, periodicals → Area studies | 
| REMPARE | RE-ingénierie des Merlons de Protection par composants Anthropiques REcyclés | In French | → Construction | 
| RéNaSS | Réseau National du Surveillance Sismique (http://renass.u-strasbg.fr) | In French | → Organizations and associations → Seismology, earthquakes → France | 
| RENATER | Réseau National de Télécommunication pour la Technologie, l'Enseignement et la Recherche | In French | → Research policy → Networks, communication → Education → Engineering, technology | 
| REOM | Redevance sur Enlèvement des Ordures Ménagères | In French | → Taxes, duties → Environmental technology, water supply, waste management | 
| REOSC | Recherches et Études d'Optique et de Sciences Connexes | In French | → Optics | 
| REP | Réacteur à Eau Pressurisée = PWR | Pressurized Water Reactor | In English = DWR | Druckwasserreaktor | In German | In French | → Nuclear technology | 
| REP | Régiment Étranger de Parachutistes | In French | → Military affairs | 
| REP | Réseau d'Éducation Prioritaire | In French | → Education | 
| REPARTIR | Recherches et Études sur la Pédagogie Assistée par les Ressources et Techniques Informatiques Récentes | In French | → Education → Computer science | 
| REPOM | Réseau national de surveillance des ports maritimes | In French | → Transport and postal services | 
| RER | Réseau Europe Régions | In French | → Research policy → Regional administration | 
| RER | Réseau Express Régional | In French | → Rail transport engineering → Transport and postal services | 
| RERE | Ressources en Eau Renouvelables Externes | In French | → Hydrology | 
| RERI | Ressources en Eau Renouvelables Internes | In French | → Hydrology | 
| RERR | Ressources en Eau Renouvelables Réelles | In French | → Hydrology | 
| RERS | Réseau d'Échanges Réciproques de Savoirs | In French | → Science and knowledge → Organizations and associations | 
| RERT | Ressources en Eau Renouvelables Totales | In French | → Hydrology | 
| RES | Revue des Études Sémitiques | In French | → Serial publications, periodicals → Judaism | 
| RESC | Réacteur à Eau SuperCritique | In French | → Nuclear technology | 
| RESF | Réseau Éducation Sans Frontières | In French | → Organizations and associations → Education | 
| ReSo | Réformistes et Solidaires | In French | → Political parties and movements | 
| RESPECT | Route Empruntée en Sécurité par le Piéton Enfant Confronté au Trafic | In French | → Transport and postal services | 
| RÉSR | Regroupement des Étudiants en Sciences des Religions | In French | → Organizations and associations → Religion, theology → Higher education, universities | 
| RESSAC | Recherches en radioécologie sur des Écosystèmes Soumis à des Situations Accidentelles Contrôlées | In French | → Environmental protection | 
| RET | Régie d'Electricité de Thônes | In French | → Electrical engineering | 
| RET | Résistance Évaporative Thermique | In French | → Textile industry | 
| RET | Risque Exceptionnel de Travail | In French | → Labour, labour economics | 
| RETINA | RÉseau TéléInformatique NAtional | In French | → Networks, communication | 
| REVES | Rendu et Environnements VirtuEls Sonorisés | In French | → Computer-based techniques | 
| RevHM | Revue d'Histoire Maghrébine | In French | → Serial publications, periodicals → History | 
| RevQ | Revue de Qumran | In French | → Serial publications, periodicals → Religion, theology → Archeology | 
| REX | Retour d'EXpérience | In French | → Quality management | 
| RF | République Française | In French | → Politics → France | 
| RFA | République Fédérale d'Allemagne = RFA | Republik Federal Alamagn | In Breton = FRG | Federal Republic of Germany | In English | In French | → Geography → Germany | 
| RFCH | Royale Fanfare Communale de Huissignies | In French | → Music | 
| RFD | Rassemblement des Forces Démocratiques | In French | → Political parties and movements | 
| RFDA | Revue Française de Droit Administratif | In French | → Serial publications, periodicals → Law, jurisprudence → Public administration, government → France | 
| RFF | Réseau Ferré de France (www.rff.fr) | In French | → Transport and postal services → France | 
| RFF | Rapport de Fin de Fabrication | In French | |
| RFI | Radio France International (www.rfi.fr) | In French | → Telecommunications → France | 
| RFI | Rapport de Fin d'Intervention | In French | |
| RFIA | Reconnaissance des Formes et Intelligence Artificielle | In French | → Congresses → Artificial intelligence → Computer-based techniques | 
| RFM | Rapport de Fin de Montage | In French | |
| RFM | Remboursement Forfaitaire Minimum | In French | → Finance | 
| RFO | Revue des Facultés catholiques de l'Ouest | In French | → Serial publications, periodicals → Roman catholic church → Higher education, universities | 
| RFrM | Revue Francaise de Mécanique | In French | → Serial publications, periodicals → Mechanical engineering → France | 
| RFS | Revue Française de Sociologie | In French | → Serial publications, periodicals → Sociology → France | 
| RFS | Règle Fondamentale de Sûreté | In French | → Nuclear technology | 
| RFSY | République Fédérale Socialiste de Yougoslavie = СФРЈ | Социјалистичка Федеративна Република Југославија | In Macedonian = SFRY | Socialist Federal Republic of Yugoslavia | In Serbian = SFRJ | Socijalistička Federativna Republika Jugoslavija | In Serbo-Croatian = JEFS | Jugoslaviako Errepublika Federal Sozialista | In Basque = RFSY | República Federal Socialista de Yugoslavia | In Spanish = SFRJ | Sozialistische Föderative Republik Jugoslawien | In German = SFRJ | Socialistická federativní republika Jugoslávie | In Czech = RFSI | República Federal Socialista de Iugoslàvia | In Catalan = RSFJ | Repubblica Socialista Federale di Jugoslavia | In Italian = SFRJ | Socjalistyczna Federacyjna Republika Jugosławii | In Polish = RSFJ | República Socialista Federal da Iugoslávia | In Portuguese = RSFI | Republica Socialistă Federativă Iugoslavia | In Romanian = СФРЮ | Социалистическая Федеративная Республика Югославия | In Russian = SFRJ | Socialistična federativna republika Jugoslavija | In Slovenian | In French | → Geography → History | 
| RFVL | Rotonde Ferroviaire de la Vallée du Loir | In French | → Rail transport engineering → Rail transport | 
| RG | Renseignements Généraux | In French | → Police | 
| RGA | Recensement Général de l'Agriculture | In French | → Agricultural sciences | 
| RGC | Rénovation Générale de Cuves | In French | → Mechanical engineering | 
| RGC | Réalisation interne à Géométrie Contrainte | In French | → Computer-based techniques | 
| RGC&U | Réseau Génie Civil et Urbain | In French | → Civil engineering → Construction | 
| RGD | Régie de Gestion des Données | In French | → Public administration, government → Computer science → Knowledge management | 
| RGE | Règles Générales d'Exploitation | In French | |
| RGG | Réseau à Grand Gabarit | In French | → Transport and postal services | 
| RGI | Référentiel Général d'Interopérabilité | In French | → Software | 
| RGN | Revue Générale Nucléaire | In French | → Serial publications, periodicals → Nuclear, atomic, and molecular physics → Nuclear technology | 
| RGO | Remise Gratuite d'Ouvrage | In French | |
| RGP | Recensement Général de la Population | In French | → Demography |