| Razorlight | Razorlight |
| Razzie Awards | Gouden Framboos |
| Raí | Raimundo Souza Vieira de Oliveira |
| Raï | Raï |
| Raúl | Raúl González Blanco |
| Raúl Bravo | Raúl Bravo |
| Raúl Castro | Raúl Castro |
| Raúl García Escudero | Raúl García |
| Raúl Juliá | Raúl Juliá |
| Račenica | Rutjsenitsa |
| Raška | Raška |
| RBMK | RBMK |
| RC | RC |
| RCD Majorque | Real Mallorca |
| RCS Verviers | RCS Verviétois |
| RCT | Rct |
| RDRAM | Rambus Inline Memory Module |
| RDX | Cyclotrimethyleentrinitramine |
| Re-Invention Tour | Re-Invention Tour |
| Rea | Rea |
| Reading | Reading |
| Reading and Leeds Festivals | Reading and Leeds Festivals |
| Reading Football Club | Reading FC |
| Ready-made | Readymade |
| ReadyBoost | ReadyBoost |
| Real | Real |
| Real Academia Española | Real Academia Española |
| Real Betis Balompié | Real Betis |
| Real Betis Séville | Real Betis |
| Real España | Real España |
| Real Jaén | Real Jaén |
| Real Madrid | Real Madrid |
| Real Madrid C | Real Madrid C |
| Real Madrid Castilla | Real Madrid Castilla |
| Real Murcie | Real Murcia |
| Real Oviedo | Real Oviedo |
| Real Saragosse | Real Zaragoza |
| Real Sociedad | Real Sociedad |
| Real Sociedad Deportiva Alcalá | RSD Alcalá |
| Real Sporting de Gijón | Sporting Gijón |
| Real Time Streaming Protocol | Real-Time Streaming Protocol |
| Real Unión de Irún | Real Unión de Irún |
| Real Valladolid | Real Valladolid |
| Real-time transport protocol | Real-time transportprotocol |
| REALbasic | REALbasic |
| Realencyclopädie der classischen Altertumswissenschaft | Der Neue Pauly |
| realité virtuelle | virtual reality |
| Really Simple Syndication | Really Simple Syndication |
| RealNetworks | RealNetworks |
| Realp | Realp |
| RealPlayer | RealPlayer |
