| Raygun | Blaster |
| Rayleigh | Rayl |
| Rayleigh criterion | Criterio de Rayleigh |
| Rayleigh distribution | Distribución de Rayleigh |
| Rayleigh limit | Límite de Rayleigh |
| Rayleigh number | Número de Rayleigh |
| Rayleigh scattering | Dispersión de Rayleigh |
| Rayleigh-scattering | Dispersión de Rayleigh |
| Rayleigh-Taylor instability | Inestabilidad Rayleigh-Taylor |
| Rayman | Rayman |
| Rayman Raving Rabbids | Rayman Raving Rabbids |
| Rayman series | Rayman |
| Raymond Aron | Raymond Aron |
| Raymond Barre | Raymond Barre |
| Raymond Carver | Raymond Carver |
| Raymond Chandler | Raymond Chandler |
| Raymond Dart | Raymond Dart |
| Raymond Franz | Creencias y prácticas de los Testigos de Jehová |
| Raymond III of Tripoli | Raimundo III de Trípoli |
| Raymond IV of Toulouse | Raimundo IV de Tolosa |
| Raymond IV of Tripoli | Raimundo IV de Tolosa |
| Raymond Kopa | Raymond Kopa |
| Raymond Kurzweil | Raymond Kurzweil |
| Raymond Loewy | Raymond Loewy |
| Raymond Nonnatus | Ramón Nonato |
| Raymond of Aguilers | Raimundo de Aguilers |
| Raymond of Antioch | Raimundo de Poitiers |
| Raymond of Burgundy | Raimundo de Borgoña |
| Raymond of Peñafort | Raimundo de Peñafort |
| Raymond Poincaré | Raymond Poincaré |
| Raymond Pons of Toulouse | Raimundo III de Trípoli |
| Raymond Queneau | Raymond Queneau |
| Raymond Roger Trencavel | Raymond Roger Trencavel |
| Raymond Roussel | Raymond Roussel |
| Raymond V of Toulouse | Ramón V de Tolosa |
| Raymond VI of Toulouse | Ramón VI de Tolosa |
| Raymond VII of Toulouse | Ramón VII de Tolosa |
| Raymond-Roger de Trencavel | Raymond Roger Trencavel |
| Raymound Roussel | Raymond Roussel |
| Raynald of Chatillon | Reinaldo de Châtillon |
