| reagens | agent |
| reagera | respond |
| reagera för kraftigt | overreact |
| reagera mot | react against |
| reagera på | react to |
| reaktion | rebound |
| reaktion mellan pesticider | interaction of pesticides |
| reaktionsförmåga | reactivity |
| reaktionskinetik | reaction kinetics |
| Reaktionskoordinat | Reaction coordinate |
| reaktionär | reactionary |
| reaktiv | reactive |
| Reaktivt pansar | Reactive armour |
| reaktor | reactor |
| reaktorsäkerhet | reactor safety |
| real | real |
| Real Academia Española | Real Academia Española |
| Real Betis Balompié | Real Betis |
| Real Jardín Botánico de Madrid | Real Jardín Botánico de Madrid |
| Real Jaén | Real Jaén |
| Real Madrid Castilla CF | Real Madrid Castilla |
| Real Murcia | Real Murcia |
| Real Oviedo | Real Oviedo |
| Real Player | RealPlayer |
| Real Sociedad | Real Sociedad |
| Real tennis | Jeu de paume |
| Real Valladolid | Real Valladolid |
| Real Zaragoza | Real Zaragoza |
| Real-time Transport Protocol | Real-time Transport Protocol |
| REALbasic | REALbasic |
| realisation | sale |
| realisationsvinst | capital gains |
| realisera | fulfill |
| realiserande | implementation |
| realiserbar | realizable |
| realisering | realization |
| realism | realism |
| realist | realist |
| realistisk | practical |
