| Ronda | Ronda |
| Rondane National Park | Park Narodowy Rondane |
| Rondanini Pietà | Pietà Rondanini |
| Ronde Island | Ronde Island |
| Ronde van Vlaanderen | Dookoła Flandrii |
| rondeau | rondo |
| rondo | rondo |
| Rondônia | Rondônia |
| Rongcheng | Rongcheng |
| Rongelap Atoll | Rongelap |
| Rongellen | Rongellen |
| Rongorongo | Rongorongo |
| Roni Bar-On | Ronni Bar-On |
| Ronneby | Gmina Ronneby |
| Ronneby Municipality | Gmina Ronneby |
| Ronnenberg | Ronnenberg |
| Ronnie James Dio | Ronnie James Dio |
| Ronnie Peterson | Ronnie Peterson |
| Ronnie Van Zant | Ronnie Van Zant |
| Ronny Johnsen | Ronny Johnsen |
| Ronsberg | Ronsberg |
| Ronshausen | Ronshausen |
| roo | kangur |
| roof | dach |
| roof tile | dachówka |
| roof-tile making machine | dachówczarka |
| roofer | dekarz |
| roofing | przykrycie |
| Rooikat AFV | Rooikat |
| rook | gawron |
| room | izba |
| room ''(chamber)'' | pokój |
| Room chapel | Narteks |
| Room on Fire | Room on Fire |
| room temperature | temperatura pokojowa |
| roommate | współlokator |
| Roomth | Przestrzeń |
| roomy | obszerny |
| Roonstrasse Synagogue | Synagoga w Kolonii |
| Roosevelt | Roosevelt |
| Roosevelt County | Hrabstwo Roosevelt |
| Roosevelt Skerrit | Roosevelt Skerrit |
| rooster | kogut |
| root | nasada |
| Root nodule | Rhizobium |
| Root of unity | Pierwiastek z jedynki |
| Root pressure | Parcie korzeniowe |
| Root to the spot | Atar |
| Root vole | Nornik północny |
| Root-knot nematode | Meloidogyne |
| Rootes | Rootes |
| Rootkit | Rootkit |
| roots | korzenie |
| Roots reggae | Roots reggae |
| Roots type supercharger | Sprężarka z wirującymi tłokami |
| Ropczyce | Ropczyce |
| Ropczyce-Sędziszów County | Powiat ropczycko-sędziszowski |
| rope | lina |
| rope bridge | most linowy |
| Rope for drawing a sail into place | Mura |
| Rope splicing | Splicing |
| Ropice | Ropica |
| Ropotamo | Ropotamo |
