| rea | Strafgefangene |
| rea non recidiva | Ersttäterin |
| Rea Silvia | Rhea Silvia |
| REACH | REACH-Verordnung |
| Reactor | Drosselspule |
| ReactOS | ReactOS |
| Read only memory | Festwertspeicher |
| Reading | Reading |
| Ready-made | Objet trouvé |
| Reaganomics | Reaganomics |
| reagente | Reagens |
| reagire | reagieren |
| reagire a | widersetzen |
| reagire in modo esagerato | unangemessen heftig reagieren |
| Real Academia de Bellas Artes de San Fernando | Real Academia de Bellas Artes de San Fernando |
| Real Academia Española | Real Academia Española |
| Real Betis Balompié | Betis Sevilla |
| Real brasiliano | Brasilianischer Real |
| Real Club Celta de Vigo SAD | Celta Vigo |
| Real Club Deportivo de la Coruña | Deportivo La Coruña |
| Real Club Deportivo Mallorca | RCD Mallorca |
| Real estate | Immobilie |
| Real Irish Republican Army | Real Irish Republican Army |
| Real Madrid | Real Madrid |
| Real Madrid Castilla | Real Madrid Castilla |
| Real Murcia | Real Murcia |
| Real Oviedo Club de Fútbol | Real Oviedo |
| Real Racing Club de Santander | Racing Santander |
| Real Saragozza | Real Saragossa |
| Real Sociedad de Fútbol | Real Sociedad San Sebastián |
| Real Sporting de Gijón | Sporting Gijón |
| Real Time Clock | Echtzeituhr |
| Real time PCR | Real time quantitative PCR |
| Real Time Streaming Protocol | Real-Time Streaming Protocol |
| Real Valladolid Club de Fútbol | Real Valladolid |
| Real Video | RealVideo |
| Real-time | Echtzeit |
| Real-time Transport Protocol | Real-Time Transport Protocol |
| REALbasic | REALbasic |
| Realdo Colombo | Realdo Colombo |
| reale | bestimmt |
| Reale Aviazione Militare Inglese | Englische Königliche Luftwaffe |
| Realgar | Realgar |
| realismo | Realismus |
| Realismo ingenuo | Naiver Realismus |
| Realismo magico | Magischer Realismus |
| realista | wahrheitsgetreu |
| realisticamente | realistisch |
| realistico | objektiv |
| Reality show | Reality TV |
| realità virtuale | virtuelle Realität |
| realizzabile | ausführbar |
| Realizzabilità | Konvertibilität |
| realizzare | fertig bringen |
| realizzarsi | verwirklichen |
| realizzatrice | Künstlerin |
| realizzazione | Leistung |
| realizzo | Verwertung |
| Really simple syndication | RSS |
| realmente | tatsächlich |
| Realp | Realp |
| RealPlayer | RealPlayer |
| Realpolitik | Realpolitik |
| Realta | Realität |
| realtà | Realität |
| Realtà aumentata | Erweiterte Realität |
| Realtà virtuale | Virtuelle Realität |
| reame | Reich |
| Reame del Commonwealth | Commonwealth Realm |
| reato | Verbrechen |
| reato ambientale | Umweltdelikt |
| reato fallimentare | Krida |
| reatore | Meiler |
| reatore nucleare | Meiler |
