| Razès | Razès |
| Raí | Raí |
| Raï | Raï |
| Raïsa Akhmatova | Raisa Akhmatova |
| Raô | Raoh |
| Raúl | Raúl González |
| Raúl Alfonsín | Raúl Alfonsín |
| Raúl Bravo | Raúl Bravo |
| Raúl Castro | Raúl Castro |
| Raúl García Escudero | Raúl García |
| Raúl Isaías Baduel | Raúl Baduel |
| Raúl Juliá | Raúl Juliá |
| Raúl López | Raül López |
| Raúl Prebisch | Raúl Prebisch |
| Rača | Rača |
| Raška | Raška |
| Rb | Rb |
| RBC Center | RBC Center |
| RBMK | RBMK |
| RC | RC |
| RC Cola | RC Cola |
| RCA Records | RCA Records |
| RCD Majorque | RCD Mallorca |
| RCP | cardiopulmonary resuscitation |
| RCR | cardiopulmonary resuscitation |
| RCT | RCT |
| RDA | GDR |
| RDF Schema | RDF Schema |
| RDRAM | RDRAM |
| RDT info | RTD info |
| RDTSC | RDTSC |
| RDX | RDX |
| Re-Animator | Re-Animator |
| Re-Invention Tour | The Re-Invention Tour |
| Reactable | ReacTable |
| Reaction nucleaire | Nuclear reactions |
| Reaction proton proton | Proton proton reaction |
| Reaction thermonucleaire | Thermonuclear reactions |
| Read or die | Read or Die |
| Reading and Leeds Festivals | Reading and Leeds Festivals |
| Ready-made | Found art |
| ReadyBoost | ReadyBoost |
| Real Academia de Bellas Artes de San Fernando | Real Academia de Bellas Artes de San Fernando |
| Real Academia Española | Real Academia Española |
| Real Academia Galega | Real Academia Galega |
| Real Betis Balompié | Real Betis |
| Real Betis Séville | Real Betis |
| Real Casa de la Moneda | Fábrica Nacional de Moneda y Timbre |
| Real Jaén | Real Jaén |
| Real Madrid C | Real Madrid C |
| Real Madrid Castilla | Real Madrid Castilla |
| Real Murcie | Real Murcia |
| Real Oviedo | Real Oviedo |
| Real Potosi | Club Bamin Real Potosí |
| Real Saragosse | Real Zaragoza |
| Real Sociedad | Real Sociedad |
| Real Sociedad Deportiva Alcalá | RSD Alcalá |
| Real Sporting de Gijón | Sporting de Gijón |
| Real Time Streaming Protocol | Real Time Streaming Protocol |
| Real Unión de Irún | Real Unión |
| Real Valladolid | Real Valladolid |
| Real-Time Control Protocol | Real time control protocol |
| Real-time transport protocol | Real-time Transport Protocol |
| REALbasic | REALbasic |
| Realdo Colombo | Realdo Colombo |
| Realencyclopädie der classischen Altertumswissenschaft | Realencyclopädie der Classischen Altertumswissenschaft |
| Realisme | Literary realism |
| realité | reality |
| realité virtuelle | virtual reality |
| Really Simple Syndication | RSS |
| RealNetworks | RealNetworks |
| Realp | Realp |
| RealPlayer | RealPlayer |
| RealVideo | RealVideo |
| Reasonable and non-discriminatory | Reasonable and Non Discriminatory Licensing |
