| Ra | Ra |
| Rabat | Rabat |
| rabbi | rabbiner |
| Rabbin | Rabbiner |
| rabbit | kanin |
| Rabbit show jumping | Kaninhop |
| Rabi | Amok |
| Rabindranath Tagore | Rabindranath Tagore |
| Rabobank | Rabobank |
| raccoon | vaskebjørn |
| Raccoon Dog | Mårhund |
| Raccord | Pressostat |
| race | race |
| Race and ethnicity in the United States Census | Race |
| race relations | forholdet mellem racer |
| Race-murder | Folkedrab |
| Racewalking | Kapgang |
| Rachel | Rakel |
| Rachel Bluwstein | Rakel |
| Rachel Carson | Rachel Carson |
| Rachel Green | Rachel Green |
| Rachel Hurd-Wood | Rachel Hurd-Wood |
| Rachel McAdams | Rachel McAdams |
| Racial Holy War | RAHOWA |
| Racial hygiene | Eugenik |
| racism | racisme |
| Rack-railroad | Tandhjulsbane |
| Rack-railway | Tandhjulsbane |
| Rack-wheel | Tandhjul |
| racket | støj |
| racking | slemning |
| Racloir | Ziehklinge |
| RAD | Hjul |
| Radagast | Radagast |
| radar | radar |
| Radegast | Radigast |
| Radial basis function | Neuralt netværk |
| Radian | Radian |
| radiation | stråling |
| radiation damage | strålingsbeskadigelse |
| radiation dose | strålingsdosis |
| radiation effect | strålingsvirkninger |
| radiation exposure | strålingseksponering |
| radiation physics | strålingsfysik |
| radiation protection | beskyttelse mod stråling |
| radiation protection law | lovgivning vedrørende strålingsbeskyttelse |
| radiation sickness | strålingssygdom |
| radiations | stråling |
| radiator | køler |
| Radiesthesia | Divination |
| Radikal gazetesi | Radikal |
| radio | radiofoni |
| Radio Free Europe | Radio Free Europe |
| Radio ham | Radioamatør |
| Radio jamming | Jamming |
| Radio Luxembourg | Radio Luxembourg |
| radio programme | radioudsendelse |
| Radio Tower Gliwice | Radiosender Gleiwitz |
| Radio tube | Elektronrør |
| Radio-Activity | Radioaktivität |
| Radio-controlled clock | Radiour |
| Radio-controlled model | Radiostyret model |
| Radio-controlled watch | Radiour |
| Radio-frequency identification | RFID |
| radioactive contamination | radioaktiv kontaminering |
| radioactive decay | radioaktivitet |
| radioactive decontamination | radioaktiv dekontaminering |
| radioactive dumping | radioaktivt depot |
| radioactive emission | radioaktiv emission |
| radioactive fallout | radioaktivt nedfald |
| radioactive pollutant | radioaktivt forurenende stof |
| radioactive substance | radioaktivt stof |
| radioactive tracer | radioaktivt sporstof |
| radioactive waste | radioaktivt affald |
| Radioactivite decay | Radioaktivitet |
| radioactivity | radioaktivitet |
