| rustre | boor |
| Rusty James | Rumble Fish |
| Rusty Schweickart | Rusty Schweickart |
| Ruswil | Ruswil |
| Rusyn | Rusyn language |
| rusé | slick |
| rusé comme un renard | sly as a fox |
| rusée | tricky |
| rut | rut |
| rutabaga | rutabaga |
| Rutaca | RUTACA Airlines |
| Rutaceae | Rutaceae |
| Rute | Rute |
| Rutebeuf | Rutebeuf |
| Rutger Hauer | Rutger Hauer |
| Ruth | Ruth |
| Ruth Bader Ginsburg | Ruth Bader Ginsburg |
| Ruth Benedict | Ruth Benedict |
| Ruth Dreifuss | Ruth Dreifuss |
| Ruth Gordon | Ruth Gordon |
| Ruth Metzler-Arnold | Ruth Metzler |
| Rutherford | Rutherford |
| Rutherford Birchard Hayes | Rutherford B. Hayes |
| rutherfordium | rutherfordium |
| Ruthène | Ruthenian language |
| Ruthènes | Rusyns |
| Ruthénie | Ruthenia |
| Ruthénie noire | Black Ruthenia |
| Ruthénie rouge | Red Ruthenia |
| Ruthénie subcarpatique | Carpathian Ruthenia |
| ruthénium | ruthenium |
| rutile | rutile |
| Rutilius Namatianus | Rutilius Claudius Namatianus |
| Rutland | Rutland |
| Rutul | Rutul language |
| Ruud Gullit | Ruud Gullit |
| Ruud Jolie | Ruud Adrianus Jolie |
| Ruud van Nistelrooy | Ruud van Nistelrooy |
| Ruvuma | Ruvuma River |
| Ruxandra Dragomir | Ruxandra Dragomir |
| Ruy Gonzáles de Clavijo | Ruy Gonzáles de Clavijo |
| Ruy López | Ruy López de Segura |
| Ruy López de Villalobos | Ruy López de Villalobos |
| Ruynes-en-Margeride | Ruynes-en-Margeride |
| Ruysbroeck | Jan van Ruysbroek |
| Ruzzante | Angelo Beolco |
| ruée | hustle |
| ruée vers l'or | gold rush |
| Ružinov | Ružinov |
| Ružomberok | Ružomberok |
| RV | Virtual reality |
| RVB | RGB |
| RW | RW |
| Rwanda | Rwanda |
| Rwanda Nziza | Rwanda Nziza |
| Rwandais | Rwandan |
