| Roscoe Arbuckle | Roscoe Arbuckle |
| Roscón de Reyes | King cake |
| Rose Bowl | Rose Bowl |
| Rose Byrne | Rose Byrne |
| Rose Garden Arena | Rose Garden arena |
| Rose Henderson | Rose Henderson |
| Rose McGowan | Rose McGowan |
| Rose Rotana | Rose Tower |
| Roseau | Roseau |
| Rosella | Rosella |
| Rosellón | Roussillon |
| Roselyn Sánchez | Roselyn Sánchez |
| Rosemary Clooney | Rosemary Clooney |
| Rosemary Harris | Rosemary Harris |
| Rosenaustadion | Rosenaustadion |
| Rosenborg Ballklub | Rosenborg BK |
| Rosenheim | Rosenheim |
| roseo | rosy |
| roseta | rosette |
| rosetas de maíz | popcorn |
| Rosetta | Rosetta |
| rosetón | rose window |
| Rosh HaAyin | Rosh HaAyin |
| Rosh Hashaná | Rosh Hashanah |
| Rosh Jodesh | Rosh Chodesh |
| Rosidae | Rosidae |
| rosillo | roan |
| Rosita | Rosetta |
| Rosita Coto | List of Hobbits |
| Roskilde | Roskilde |
| Roslavl | Roslavl |
| Rosmarino | Rosemary |
| Rosmarinus officinalis | Rosemary |
| Rosoideae | Rosoideae |
| rosquilla | doughnut |
| Ross Boss Friedman | Ross the Boss |
| Ross Brawn | Ross Brawn |
| Ross Geller | Ross Geller |
| Ross Perot | Ross Perot |
| Ross Robinson | Ross Robinson |
| Rossa | Rossa |
| Rossenges | Rossenges |
| Rossens | Rossens |
| Rossi | Rossi |
| Rossinière | Rossinière |
| Rossio | Rossio |
| Rosso Fiorentino | Rosso Fiorentino |
| Rostock | Rostock |
| Rostov | Rostov |
| Rostov del Don | Rostov-na-Donu |
| Rostratulidae | Painted snipe |
| Rostrhamus hamatus | Slender-billed Kite |
| Rostrhamus sociabilis | Snail Kite |
| rostrituerto | morose |
| rostro | face |
| rostro pálido | paleface |
| rostrum | rostrum |
| Roswell | Roswell |
| rosácea | rosacea |
| rosáceo | pinkish |
| Rot-Weiss Essen | Rot-Weiss Essen |
| Rota Romana | Sacra Rota Romana |
| rotacional | rotational |
| rotacismo | rhotacism |
| rotación | rotation |
| rotación de cultivos | crop rotation |
| Rotación de cúmulo | Cluster rotation |
| Rotación de Faraday | Faraday rotation |
| Rotación de un cuerpo sólido | Rigid body rotation |
| Rotación diferencial | Differential rotation |
| Rotación galáctica | Galactic rotation |
| Rotación sincrónica | Synchronous rotation |
| Rotación síncrona | Synchronous rotation |
| Rotador oblicuo | Oblique rotator |
| rotar | rotate |
| Rotaract | Rotaract |
| rotaria | Rotarian |
| rotario | Rotarian |
| Rotary International | Rotary International |
