| rotativo | rotary |
| rotatorio | rotatory |
| rotavirus | rotavirus |
| Rotenburg an der Wümme | Rotenburg an der Wümme |
| Rotglá y Corbera | Rotglà i Corberà |
| Roth | Roth |
| Rothenbrunnen | Rothenbrunnen |
| Rothschild | Rothschild family |
| roti | roti |
| Rotifera | Rotifer |
| roto | broken |
| rotograbado | rotogravure |
| rotonda | rotary |
| Rotonda de los Hombres Ilustres | Panteón de Dolores |
| Rotonda mágica | Magic Roundabout |
| rotor | rotor |
| Rotor Flettner | Flettner ship |
| Rotorua | Rotorua |
| Rotoscopio | Rotoscoping |
| Rottach-Egern | Rottach-Egern |
| Rottal-Inn | Rottal-Inn |
| Rotten Apples | Rotten Apples |
| Rotterdam | Rotterdam |
| Rotting Christ | Rotting Christ |
| Rottumerplaat | Rottumerplaat |
| Rottweil | Rottweil |
| Rottweiler | Rottweiler |
| rotula | knee-cap |
| rotulación | signage |
| rotulado | lettered |
| rotulador | felt-tip |
| rotular | label |
| rotulo | caption |
| Rotuma | Rotuma |
| rotundamente | explicitly |
| rotundidad | roundness |
| rotundo | outright |
| rotura | break |
| roturar | reclaim |
| Roubaix | Roubaix |
| Rouben Mamoulian | Rouben Mamoulian |
| Rouget de Lisle | Claude Joseph Rouget de Lisle |
| Rouran | Rouran |
| Rousseau | Rousseau |
| Route nationale | Route nationale |
| router | router |
| Router ADSL | DSL modem |
| Roux | Foxy red |
| ROV | Remotely operated vehicle |
| Rovaniemi | Rovaniemi |
| Roveredo | Roveredo |
| Rovigo | Rovigo |
| Rovio | Rovio |
| Rovray | Rovray |
| Rowan Atkinson | Rowan Atkinson |
| Rowan Williams | Rowan Williams |
| Rowland Hill | Beehive |
| Roxana | Roxana |
| Roxas | Roxas City |
| Roxburgo | Roxburgh |
| Roxelana | Roxelana |
| Roy Arad | Roy Arad |
| Roy Emerson | Roy Emerson |
| Roy Keane | Roy Keane |
| Roy Lichtenstein | Roy Lichtenstein |
| Roy Makaay | Roy Makaay |
| Roy Orbison | Roy Orbison |
| Roy Scheider | Roy Scheider |
| Roy Tarpley | Roy Tarpley |
| Roy Urquhart | Roy Urquhart |
| royal | baking powder |
| Royal Academy of Music | Royal Academy of Music |
| Royal Air Force | Royal Air Force |
| Royal Albert Hall | Royal Albert Hall |
| Royal Antwerp FC | Royal Antwerp FC |
| Royal Ascot | Ascot Racecourse |
| Royal Astronomical Society | Royal Astronomical Society |
| Royal Bank of Canada | Royal Bank of Canada |
| Royal Botanical Garden Edinburgh | Royal Botanic Garden Edinburgh |
| Royal Dutch Shell | Royal Dutch Shell |
| Royal Horticultural Society | Royal Horticultural Society |
| Royal Jordanian | Royal Jordanian |
| Royal Military College | Royal Military College of Canada |
| Royal Opera House | Royal Opera House |
| Royal Pavilion | Royal Pavilion |
| Royal Rife | Royal Rife |
| Royal Rumble | Royal Rumble |
| Royal Society | Royal Society |
| Royal Society for the Protection of Birds | Royal Society for the Protection of Birds |
| Royla Hunt | Royal Hunt |
| Royston Drenthe | Royston Drenthe |
| Roystonea regia | Roystonea |
| roza | forest aisle |
| rozadura | chafe |
| rozagante | ruddy |
