| Rayleigh | Rayleigh |
| Rayman | Rayman |
| Rayman contre les lapins crétins | Rayman Raving Rabbids |
| Rayman M | Rayman Arena |
| Raymond Aron | Raymond Aron |
| Raymond Barre | Raymond Barre |
| Raymond Boudon | Raymond Boudon |
| Raymond Bourque | Ray Bourque |
| Raymond Carver | Raymond Carver |
| Raymond Cattell | Raymond Cattell |
| Raymond Chandler | Raymond Chandler |
| Raymond Dart | Raymond Dart |
| Raymond de Bourgogne | Raymond of Burgundy |
| Raymond de Peñafort | Raymond of Peñafort |
| Raymond de Poitiers | Raymond of Antioch |
| Raymond du Puy | Raymond du Puy de Provence |
| Raymond Franz | Raymond Franz |
| Raymond II de Tripoli | Raymond II of Tripoli |
| Raymond III de Tripoli | Raymond III of Tripoli |
| Raymond IV de Toulouse | Raymond IV of Toulouse |
| Raymond IV de Tripoli | Raymond IV of Tripoli |
| Raymond Kopa | Raymond Kopa |
| Raymond Kurzweil | Raymond Kurzweil |
| Raymond Lefevre | Raymond Lefèvre |
| Raymond Loewy | Raymond Loewy |
| Raymond Lulle | Ramon Llull |
| Raymond Nonnat | Raymond Nonnatus |
| Raymond Poincaré | Raymond Poincaré |
| Raymond Queneau | Raymond Queneau |
| Raymond Roussel | Raymond Roussel |
| Raymond Scott | Raymond Scott |
| Raymond V de Toulouse | Raymond V of Toulouse |
| Raymond Vahan Damadian | Raymond Vahan Damadian |
| Raymond VI de Toulouse | Raymond VI of Toulouse |
| Raymond VII de Toulouse | Raymond VII of Toulouse |
| Raymond Weil SA | Raymond Weil |
| Raymond-Marie Rouleau | Felix-Raymond-Marie Rouleau |
| Raymond-Roger de Foix | Raimond-Roger of Foix |
| Raymundo Ricardo Gomes | Ricardo Gomes |
| Rayo Vallecano | Rayo Vallecano |
| rayon | beam |
| Rayon bricolage | Do-it-yourself department |
| Rayon chaussures | Footwear department |
| Rayon cosmique | Cosmic ray |
| Rayon cosmique galactique | Galactic cosmic ray |
| Rayon cosmique primaire | Primary cosmic ray |
| rayon de bibliothèque | bookshelf |
| Rayon de Bohr | Bohr radius |
| Rayon de convergence | Radius of convergence |
| Rayon de covalence | Covalent radius |
| Rayon de Holmberg | Holmberg radius |
| Rayon de Hubble | Hubble radius |
| Rayon de Larmor | Larmor precession |
| rayon de lune | moonbeam |
| rayon de miel | honeycomb |
| Rayon de Schwarzschild | Schwarzschild radius |
| rayon de soleil | sunbeam |
| Rayon de Van der Waals | Van der Waals radius |
| Rayon gamma | Gamma ray |
| Rayon hommes | Menswear department |
| Rayon ionique | Ionic radius |
| rayon laser | laser beam |
| Rayon limite par effet de mar | Tidal radius |
| Rayon mortel | Directed-energy weapon |
| Rayon N | N ray |
| Rayon solaire | Solar radius |
| Rayon spectral | Spectral radius |
| Rayon Sports FC | Rayon Sport |
| Rayon T | Terahertz radiation |
| Rayon X | X-ray |
| rayonnage | shelf |
| rayonnages | shelving |
| rayonnant | shining |
