| reacender | ranimer |
| reacionária | vieille barbe |
| reacionário | vieille barbe |
| Reactor | Reactor |
| reactor biológico | bioréacteur |
| reactores | réacteur |
| reactores biológicos | bioréacteur |
| reactores nucleares | réacteur nucléaire |
| reactores rápidos | surgénérateur |
| Reacção de Maillard | Réaction de Maillard |
| reacção nuclear | réaction nucléaire |
| Reacção química | Réaction chimique |
| reacções fotoquímicas | réaction photochimique |
| reacções nucleares | réaction nucléaire |
| reacções químicas | réaction chimique |
| Read Or Die | Read or die |
| readaptar-se | se réadapter |
| Reading | Reading |
| Reading FC | Reading Football Club |
| readmitir | rétablir |
| Ready | Ready |
| Ready made | Ready-made |
| Readyboost | ReadyBoost |
| reafirmar | exposer de nouveau |
| reagente | agent |
| reagir | contrebalancer |
| reagir bem | réagir |
| reagir contra | militer contre |
| reagir de modo exagerado | réagir de manière exagérée |
| reagrupar | regrouper |
| reajustar | rajuster |
| reajuste | modification |
| real | véritable |
| Real Academia de Belas-Artes de São Fernando | Real Academia de Bellas Artes de San Fernando |
| Real Academia Galega | Real Academia Galega |
| Real Academia Militar de Sandhurst | Académie royale militaire de Sandhurst |
| Real Betis Balompié | Real Betis Balompié |
| Real brasão de armas do Reino Unido | Armes royales du Royaume-Uni |
| Real Club Celta de Vigo | Celta Vigo |
| Real Club Deportivo de La Coruña | Deportivo La Corogne |
| Real Club Deportivo Mallorca | RCD Majorque |
| Real Club Recreativo de Huelva | Recreativo de Huelva |
| Real Clube do Automóvel | Club automobile royal |
| Real Força Aérea Britânica | RAF |
| Real Madrid Club de Fútbol | Real Madrid |
| Real Murcia Club de Fútbol | Real Murcie |
| Real Oviedo | Real Oviedo |
| Real Sociedad de Fútbol | Real Sociedad |
| Real Sporting de Gijón | Real Sporting de Gijón |
| Real Valladolid | Real Valladolid |
| Real Zaragoza | Real Saragosse |
| Real-time Transport Protocol | Real-time transport protocol |
| realejo | orgue de Barbarie |
