| Roentgen rays | rayos X |
| roentgenium | roentgenio |
| Roer | Departamento del Roer |
| Roeselare | Roeselare |
| Roetgen | Roetgen |
| Roff | Roff |
| Rogaland | Rogaland |
| Rogelio Domínguez | Rogelio Antonio Domínguez |
| Roger | Rogelio |
| Roger Bacon | Roger Bacon |
| Roger Casement | Roger Casement |
| Roger Corman | Roger Corman |
| Roger Crozier Saving Grace Award | Trofeo Roger Crozier |
| Roger de Flor | Roger de Flor |
| Roger De Vlaeminck | Roger De Vlaeminck |
| Roger Ebert | Roger Ebert |
| Roger Federer | Roger Federer |
| Roger Garaudy | Roger Garaudy |
| Roger García Junyent | Roger Garcia Junyent |
| Roger Glover | Roger Glover |
| Roger Guillemin | Roger Guillemin |
| Roger I of Sicily | Rogelio I de Sicilia |
| Roger II of Sicily | Rogelio II de Sicilia |
| Roger III of Sicily | Roger III de Foix |
| Roger Joseph Boscovich | Rogelio José Boscovich |
| Roger Martin du Gard | Roger Martin du Gard |
| Roger Meddows-Taylor | Roger Meddows-Taylor |
| Roger Milla | Roger Milla |
| Roger Moore | Roger Moore |
| Roger of Canne | Roger de Canne |
| Roger of Hoveden | Roger de Hoveden |
| Roger of Lauria | Roger de Lauria |
| Roger Penrose | Roger Penrose |
| Roger Taylor | Roger Taylor |
| Roger Vadim | Roger Vadim |
| Roger Waters | Roger Waters |
| Roger Wolcott Sperry | Roger Wolcott Sperry |
| Roger Zelazny | Roger Zelazny |
| Roger-Bernard III of Foix | Roger Bernardo III de Foix |
| Rogerius of Apulia | Roger de Apulia |
| Rogier van der Weyden | Roger van der Weyden |
| rogue | bandido |
| Roguelike | Roguelike |
| roguery | picardía |
| roguish | picaresco |
| Rogério Ceni | Rogério Ceni |
| Roh Moo-hyun | Roh Moo-hyun |
| Roh Ogura | Roh Ogura |
| Rohan | Rohan |
| Rohirrim | Rohirrim |
| Rohonc Codex | Codex Rohonczi |
| Rohr | Rohr |
| Rohr im Burgenland | Rohr |
| Rohr in Niederbayern | Rohr |
| Rohrbach | Rohrbach |
| Rohrbach in Oberösterreich | Rohrbach |
| Roi fainéant | Reyes holgazanes |
| roil | enturbiar |
| roisterer | juerguista |
| roistering | estrepitoso |
| Rojas Partido | Rojas |
| Rokeby Venus | Venus del espejo |
| Rokk í Reykjavík | Rokk í Reykjavík |
| Roko Ukić | Roko Leni Ukić |
| Rokusho | Carbonato de cobre |
| Roland | Roldán |
| Roland Barthes | Roland Barthes |
| Roland Corporation | Roland |
| Roland Deschain | Roland Deschain |
| Roland Emmerich | Roland Emmerich |
| Roland Freisler | Roland Freisler |
| Roland Garros | Roland Garros |
| Roland Joffé | Roland Joffé |
| Roland Mark Schoeman | Roland Schoeman |
| Roland Ratzenberger | Roland Ratzenberger |
| Rolas | Ilhéu das Rólas |
| role | papel |
| role model | modelo |
| Role Playing Game | Juegos de Rol |
| Role-playing game | Juegos de Rol |
| Rolento | Rolento Schugerg |
| roleplaying game | juego de rol |
| Rolf Liebermann | Rolf Liebermann |
| Rolf Maximilian Sievert | Rolf Sievert |
| Rolf Schock Prizes | Premio Schock |
| Rolf Stonmelen | Rolf Stonmelen |
| Rolie Polie Olie | Rolie Polie Olie |
| roll | lanzar |
| roll away | caer rodando |
| roll by | pasar |
| roll call | lista de presentes |
| roll down | bajar rodando por |
| roll of honor | lista de honor |
| roll off | caer rodando |
| roll on | pasar |
| roll one's eyes | voltear los ojos |
| roll out | extender con el rodillo |
| roll up | enrollar |
| Roll with It | Roll With It |
| roll-on | roll-on |
| rollback | redoble |
| rolled fillet | rollo albardado |
| rolled oats | copos de avena |
| rolled up | arrollado |
| roller | bigudí |
| roller coaster | montaña rusa |
| roller derby | roller derby |
| Roller drum gate | Cilindro |
| Roller figure skating | Patinaje artístico sobre ruedas |
| Roller hockey | Hockey sobre patines |
| roller skate | patín sobre ruedas |
| Roller weir | Cilindro |
| roller-skate | patinar sobre ruedas |
| rollercoaster | montaña rusa |
| RollerCoaster Tycoon | RollerCoaster Tycoon |
| rollick | retozar |
