| Real anomaly | Prava anomalija |
| Real Madrid Baloncesto | Real Madrid Club de Fútbol |
| Real number | Realno število |
| reality | resničnost |
| Reality television | Resničnostna oddaja |
| reasonableness | razumnost |
| Rebaque | Rebaque |
| Rebirthing-Breathwork | Renesansa |
| Receiver terminal | Receptor |
| Reception | Glavna stran |
| Receptor antagonist | Antagonist |
| Recherche Assistance Intervention Dissuasion | RAID |
| reclamation industry | predelava odpadkov |
| Recoilless rifle | Netrzajni top |
| recombinant DNA technology | rekombinantna DNA tehnologija |
| recommendation | priporočilo |
| Reconquista | Rekonkvista |
| recorder | kljunasta flavta |
| recording of substances | beleženje snovi |
| recovery plan | načrt ponovne vzpostavitve |
| recreation | rekreacija |
| recreational area | rekreacijsko območje |
| Recreational mathematics | Razvedrilna matematika |
| rectangle | pravokotnik |
| Recti- | Premica |
| Rectus abdominis muscle | Prema trebušna mišica |
| Recursion | Rekurzija |
| recyclability | primernost za recikliranje |
| recyclable plastic | plastika |
| recycled material | reciklirani material |
| recycled paper | reciklirani papir |
| recycling | recikliranje |
| recycling management and waste law | zakon o recikliranju in odpadkih |
| recycling potential | možnosti za recikliranje |
| recycling ratio | stopnja recikliranja |
| red | rdeča |
| Red Admiral | Admiral |
| Red algae | Rdeče alge |
| Red Amick | Red Amick |
| Red Army | Rdeča armada |
| Red Army Faction | Frakcija rdeče armade |
| Red blood | Sila |
| Red blood cell | Eritrocit |
| Red Book | Rdeči seznam IUCN |
| Red Bull | Red Bull |
| Red Bull Racing | Red Bull Racing |
| Red Crescent | Rdeči križ |
| Red Cross | Rdeči križ |
| red deer | navadni jelen |
| Red dwarf | Rdeča pritlikavka |
| Red Fox | Navadna lisica |
| Red giant | Rdeča orjakinja |
| Red hair | Rdeča |
| Red head | Mandarina |
| Red Hot Chili Peppers | Red Hot Chili Peppers |
| Red Kangaroo | Rdeči veliki kenguru |
| red kite | rjavi škarnik |
| Red Panda | Polarna lisica |
| Red Sea | Rdeče morje |
| Red Sea Governorate | Rdeče morje |
| Red Spider Nebula | Rdeči pajek |
| Red spot | Vrtnica |
| Red Square | Rdeči trg |
| Red star | Rdeča zvezda |
| Red telephone | Rdeči telefon |
| red tide | rdeča plima |
| Reda Mansour | Reda Mansour |
| Redeemer | Jezus Kristus |
