| rationellt | in proportion |
| Ratko Mladić | Ratko Mladić |
| Ratnapura | Ratnapura |
| Ratnasiri Wickremanayake | Ratnasiri Wickremanayake |
| Ratramnus | Ratramnus |
| ratt | wheel |
| Rattfylleri | Driving under the influence |
| Ratzeburg | Ratzeburg |
| Rauf Denktaş | Rauf Denktaş |
| Raufoss IL | Raufoss IL |
| Raul Chadzjimba | Raul Khadjimba |
| Raul Hilberg | Raul Hilberg |
| Raul Julia | Raúl Juliá |
| Rauma | Rauma River |
| Rauma-klassens robotbåtar | Rauma class missile boat |
| Raumism | Raumism |
| Ravachol | Ravachol |
| Ravana | Ravana |
| Raven-Symoné | Raven-Symoné |
| Ravenna | Ravenna |
| Ravenna Calcio | Ravenna Calcio |
| Ravensbrück | Ravensbrück concentration camp |
| Ravi | Ravi River |
| Ravi Shankar | Ravi Shankar |
| ravin | gorge |
| ravioli | ravioli |
| Ravnsborgs kommun | Ravnsborg |
| RAW | WWE Raw |
| Rawalpindi | Rawalpindi |
| Rawkus Records | Rawkus Records |
| Ray Bourque | Ray Bourque |
| Ray Bradbury | Ray Bradbury |
| Ray Brown | Ray Brown |
| Ray Charles | Ray Charles |
| Ray Clemence | Ray Clemence |
| Ray Emery | Ray Emery |
| Ray Evans | Ray Evans |
| Ray Ewry | Ray Ewry |
| Ray Kennedy | Ray Kennedy |
| Ray Kurzweil | Raymond Kurzweil |
| Ray Liotta | Ray Liotta |
| Ray Manzarek | Ray Manzarek |
| Ray Romano | Ray Romano |
| Ray Toro | Ray Toro |
| Rayleigh-spridning | Rayleigh scattering |
| Rayman | Rayman |
| Rayman Raving Rabbids | Rayman Raving Rabbids |
| Raymond Aron | Raymond Aron |
| Raymond Barre | Raymond Barre |
| Raymond Carver | Raymond Carver |
| Raymond Chandler | Raymond Chandler |
| Raymond Dart | Raymond Dart |
| Raymond Franz | Raymond Franz |
| Raymond Kopa | Raymond Kopa |
| Raymond Poincaré | Raymond Poincaré |
| Raymond Queneau | Raymond Queneau |
| Raymond Vahan Damadian | Raymond Vahan Damadian |
| Raymonde de LaRoche | Raymonde de Laroche |
| Rayo Vallecano | Rayo Vallecano |
| rayon | rayon |
| Rayong | Rayong Province |
| Rayonism | Rayonism |
| Razamanaz | Razamanaz |
| Razavikhorasan | Razavi Khorasan Province |
| Razorlight | Razorlight |
| razzia | bust |
| razzior | raids |
| Raël | Raël |
| Raï | Raï |
| Raúl | Raúl González |
| Raúl Alfonsín | Raúl Alfonsín |
| Raúl Bravo | Raúl Bravo |
| Raúl Castro | Raúl Castro |
| Raša | Raša |
| Raška | Rascia |
| RB | Rb |
| RBB | Rundfunk Berlin-Brandenburg |
| RBI | Risk based inspection |
| RBMK | RBMK |
| RC | RC |
| RC Celta de Vigo | Celta de Vigo |
| RC Cola | RC Cola |
| RC Deportivo de La Coruña | Deportivo de La Coruña |
| RC Strasbourg | RC Strasbourg |
| Rc-lok | Rc locomotive |
| RCA | RCA |
| RCA-kontakt | RCA connector |
| RCD Espanyol de Barcelona | RCD Espanyol |
| RCD Mallorca | RCD Mallorca |
| RCM | Reliability centered maintenance |
| RCT | Randomized controlled trial |
| RDI | Dietary Reference Intake |
| RDRAM | RDRAM |
| Re-Animator | Re-Animator |
