| rassla | rvát se |
| rast | přestávka |
| Rastafari | Rastafari |
| raster | rastr |
| raster till vektor | rastr na vektor |
| Rastergrafik | Rastrová grafika |
| Ratatosk | Ratatosk |
| Rationella tal | Racionální číslo |
| Ratko Mladić | Ratko Mladić |
| ratt | volant |
| Ravachol | Ravachol |
| Rave | Rave |
| Ravenclaw | Havraspár |
| Ravenna | Ravenna |
| Ravensbrück | Koncentrační tábor Ravensbrück |
| Ravi | Ravi |
| RAW | RAW |
| Rawalpindi | Rávalpindí |
| Ray Bradbury | Ray Bradbury |
| Ray Charles | Ray Charles |
| Ray Ewry | Ray Ewry |
| Ray Manzarek | Ray Manzarek |
| Ray Toro | Ray Toro |
| Rayleigh-spridning | Rayleighův rozptyl |
| Raymond Barre | Raymond Barre |
| Raymond Chandler | Raymond Chandler |
| Raymond Poincaré | Raymond Poincaré |
| Raymond Queneau | Raymond Queneau |
| Raytracing | Sledování paprsku |
| Razorlight | Razorlight |
| Raúl | Raúl González |
| Raúl Castro | Raúl Castro |
| RB | Rubidium |
| RC | Červený kříž |
| RC Lens | RC Lens |
| RC Strasbourg | RC Strasbourg |
| RCD Espanyol de Barcelona | RCD Espanyol |
| RDI | Doporučená denní dávka |
| RDRAM | RDRAM |
| RDS | Radio Data System |
| rea | výprodej |
| REACH | REACH |
| Reading | Reading |
| Reading FC | Reading FC |
| reaktion mellan pesticider | interakce pesticidů |
| reaktionskinetik | kinetika reakce |
| reaktor | reaktor |
| reaktorsäkerhet | bezpečnost reaktoru |
| Real Betis Balompié | Real Betis |
| Real Madrid | Real Madrid |
| Real-time Transport Protocol | RTP |
| realisation | výprodej |
| realisera | prodávat |
| Realpresens | Reálná přítomnost |
| Realtidsstrategi | Realtimová strategie |
| Rebecca | Rebeka |
| Rebecka | Rebeka |
| Recanati | Recanati |
| recensent | recenzent |
| recept | recept |
| Reconquista | Reconquista |
| Red Bull | Red Bull |
| Red Bull Racing | Red Bull Racing |
| Red Bull Salzburg | FC Red Bull Salzburg |
| Red Dwarf | Červený trpaslík |
| Red Hot Chili Peppers | Red Hot Chili Peppers |
| Red River | Červená řeka |
| Red River of the North | Red River of the North |
| Reda Mansour | Reda Mansour |
| redaktör | redaktor |
| redan | už |
| Redbridge | Redbridge |
| redd | rejda |
| Redding | Reading |
| rede | hnízdo |
| Redemptor Hominis | Redemptor Hominis |
| Redemptorister | Kongregace Nejsvětějšího Vykupitele |
| redigera | editovat |
