| Rumisberg | Rumisberg |
| Rumsteak | Rumpsteak |
| Rumsteck | Rumpsteak |
| Rumtek | Rumtek Monastery |
| Run level | Runlevel |
| Run-length encoding | Run-length encoding |
| Run-time type information | Run-time type information |
| Runaway Train | Runaway Train |
| Runcorn | Runcorn |
| Rundetårn | Rundetårn |
| Rundfunk Berlin-Brandenburg | Rundfunk Berlin-Brandenburg |
| Rundfunk-Sinfonieorchester Berlin | Berlin Radio Symphony Orchestra |
| rune | rune |
| Runes hongroises | Old Hungarian script |
| RuneScape | RuneScape |
| Rungnado May Day Stadium | Rungrado May Day Stadium |
| runiforme | runiform |
| runique | runic |
| Runkel | Runkel |
| Running Man | The Running Man |
| runologie | runology |
| Ruoholahti | Ruoholahti |
| Ruokolahti | Ruokolahti |
| Ruoska | Ruoska |
| Ruotsinpyhtää | Ruotsinpyhtää |
| RuPaul | RuPaul |
| Rupea | Rupea |
| Rupel | Rupel |
| Rupert de Deutz | Rupert of Deutz |
| Rupert de Salzbourg | Rupert of Salzburg |
| Rupert Everett | Rupert Everett |
| Rupert Grint | Rupert Grint |
| Rupert Murdoch | Rupert Murdoch |
| Rupert Sheldrake | Rupert Sheldrake |
| Rupes | Rupes |
| Rupicapra | Rupicapra |
| rupin | posh |
| Rupperswil | Rupperswil |
| Ruppiaceae | Ruppiaceae |
| Ruppoldsried | Ruppoldsried |
| Rupt-aux-Nonains | Rupt-aux-Nonains |
| Rupteur | Disconnect switch |
| rupture | severance |
