| Recidivitet | Second offence |
| Recife | Recife |
| Recklinghausen | Recklinghausen |
| Reclaim the Streets | Reclaim the Streets |
| Reconquista | Reconquista |
| Recording Academy | National Academy of Recording Arts and Sciences |
| Recreativo de Huelva | Recreativo de Huelva |
| Red Barnet | Save the Children |
| Red Bull | Red Bull |
| Red Dwarf | Red Dwarf |
| Red Hot Chili Peppers | Red Hot Chili Peppers |
| Red rain in Kerala | Red rain in Kerala |
| red tide | red tide |
| Redaktør | Creation |
| rede | nest |
| Rede hår | Comb |
| redebygning | nesting |
| redebygningsområde | nesting area |
| redigere | edit |
| Redigerer Nobelprisen i fysik | Nobel Prize in Physics |
| Redigerer Pund | Book |
| redigeringskonflikt | edit conflict |
| Redningen af de danske jøder | Rescue of the Danish Jews |
| redningskorps | rescue service |
| Redningssvømmer | Rescue swimmer |
| redningssystem | rescue system |
| Redox-flow-celle | Flow battery |
| redskab til økonomisk styring | economic management instrument |
| reducere | depleted |
| reduktion | chemical reduction |
| reduktion af ozonlaget | ozone layer depletion |
| Reduncini | Reduncinae |
| Reelle tal | Real number |
| Reese Witherspoon | Reese Witherspoon |
| Refactoring | Code refactoring |
| referencedata | referral information |
| referenceinformationssystem | referral information system |
| Refleksmodtager | Reflectional receiver |
| Refleksvest | High-visibility clothing |
| reflektometri | reflectometry |
| Reformationen | Protestant Reformation |
| Reformator | Protestant Reformers |
| Reformerte kirke | Reformed churches |
| Reformjødedom | Reform Judaism |
| Reformtraktaten | Reform Treaty |
| Refraktion | Refraction |
| Refugium | Refugia |
| Regalskeppet Vasa | Vasa |
| regel | rule |
| regenerering | regeneration |
| Regensburg | Regensburg |
| Regent | Regent |
| regere | govern |
| regering | government |
| Regeringen Anders Fogh Rasmussen I | Cabinet of Anders Fogh Rasmussen I |
| Regeringen Anders Fogh Rasmussen II | Cabinet of Anders Fogh Rasmussen II |
| regeringsansvar | government liability |
| regeringsbygning | government building |
| regeringsform | form of government |
| regeringslov | decree |
| regeringspolitik | government policy |
| Reggae | Reggae |
| Reggio di Calabria | Reggio Calabria |
| Regierungsbezirk | Regierungsbezirk |
| Regiment | Regiment |
| Regin | Regin |
| Regina | Regina |
| Regina Spektor | Regina Spektor |
| Reginald Arvizu | Reginald Arvizu |
| Reginald Fils-Aime | Reggie Fils-Aime |
| region | region |
| Region Hovedstaden | Hovedstaden |
| Region Midtjylland | Region Midtjylland |
| Region Nordjylland | Region Nordjylland |
| Region Sjælland | Region Sjælland |
| Region Syddanmark | Region Syddanmark |
| Regional | Chamber |
| regional forordning | regional regulation |
| Regional Internet Registry | Regional Internet registry |
| regional konvention | regional convention |
| regional lov | regional law |
| regional myndighed | regional authority |
| regional naturpark | regional natural park |
| regional statistik | regional statistics |
| regional struktur | regional structure |
| regionplan | regional plan |
| register over emissioner | emission register |
| registreret anlægsområde | registered site |
| registrering | registration |
| registrering af stoffer | recording of substances |
| registreringspligt | registration obligation |
| registreringsprocedure | registration proceeding |
| regler | regulation |
| regn | rain |
| Regnar Lodbrog | Ragnar Lodbrok |
| regnbue | rainbow |
| Regnbuehinden | Iris |
| Regnbyge | Shower |
| regne | rain |
| Regneark | Spreadsheet |
| regnemaskine | computer |
| Regnitz | Regnitz |
| regnorm | earthworm |
| regnorme | earthworm |
| regnskab | accounting |
| regnskabssystem | accounting system |
| regnskov | rain forest |
| Regntøj | Wellington boot |
| regnvand | rain water |
| Regression | Recession |
| regulering af landbrugsproduktionen | regulation of agricultural production |
| rehabilitering | rehabilitation |
| rehabilitering af mineområde | mining site restoration |
| Rehovot | Rehovot |
| Reichsmark | German Reichsmark |
| Reichstag | Reichstag |
| Reidmar | Hreidmar |
| Reign in Blood | Reign in Blood |
| Reign Over Me | Reign Over Me |
| Reiki | Reiki |
| Reims | Reims |
| Reinbek | Reinbek |
| Reinhard Heydrich | Reinhard Heydrich |
| Reinhard Selten | Reinhard Selten |
| Reinheitsgebot | Reinheitsgebot |
| Reinkarnation | Reincarnation |
| Reisa nationalpark | Reisa National Park |
| ReiserFS | ReiserFS |
| Reitangruppen | Reitan Group |
| reje | shrimp |
| Rejnfan-slægten | Tanacetum |
| rejse | stand up |
| rejse uden for perioder med spidsbelastning | off-peak travelling |
| rejsebureau | travel agency |
| Rejseforsikring | Travel insurance |
| Rejseholdet | Rejseholdet |
| Rejsen mod Vest | Journey to the West |
| rejsning | erection |
| reklame | advertisement |
| rekombinant DNA-teknologi | recombinant DNA technology |
| Rekonstruktionistisk jødedom | Reconstructionist Judaism |
| rekreation | recreation |
| rekreativt område | recreational area |
| Rekrut | Squaddy |
| rektangel | rectangle |
| Rektascension | Right ascension |
| Rekursiv | Recursion |
| Rekursivt akronym | Recursive acronym |
| Rekviem | Requiem |
| Relation | Relation |
| relationsdatabase | relational database |
| Relativisme | Relativism |
| Relativitetsteori | Principle of relativity |
| Release the Stars | Release the Stars |
| relief | relief |
| religion | religion |
| Religion i Sydasien | Religion in India |
| Religionsfilosofi | Philosophy of religion |
| Religionshistorie | History of religions |
| Religionskritik | Criticism of religion |
| Religionssociologi | Sociology of religion |
| Religionsvidenskab | theology |
| religiøs | religious |
| Religiøs forandring | New religious movement |
| Religiøs forfølgelse | Religious persecution |
| religiøse leder | Supreme Leader |
| Religiøse retninger inden for islam | Divisions of Islam |
| Rellingen | Rellingen |
| Relæ | Relay |
| Remagen | Remagen |
| Rembetika | Rebetiko |
| Rembrandt | Rembrandt |
| Rembrandt-museet | Rembrandt House Museum |
| Remington | Remington Arms |
| Remmesæl | Bearded Seal |
| Remonstrant | Arminianism |
| Remonstranter | Arminianism |
| remoulade | remoulade |
| Remscheid | Remscheid |
| remulade | remoulade |
| Remus og Romulus | Romulus and Remus |
| ren | clean |
| ren teknologi | clean technology |
| renaturering | renaturation |
| Renault | Renault |
| Renault Clio | Renault Clio |
| Renault Megane | Renault Megane |
| Rendalen | Rendalen |
| rendezvous | rendezvous |
| Rendsborg | Rendsburg |
| Rendsborg-Egernførde | Rendsburg-Eckernförde |
| Renfrewshire | Renfrewshire |
| renholdningsselskab | cleansing department |
| Renin-angiotensin-aldosteron-systemet | Renin-angiotensin system |
| renlighed | cleanliness |
| Rennebu | Rennebu |
| Rennes | Rennes |
| Rennesøy | Rennesøy |
| Renoir | Renoir |
| renovationsvogn | garbage truck |
| rensdyr | reindeer |
| Rensdyret Rudolf | Rudolph the Red-Nosed Reindeer |
| rense | clean |
| rensemiddel | detergent |
| rensning | purification |
| rensning af drikkevand | drinking water treatment |
| rensning af slam | clearing sludge |
| rensningsanlæg | purification plant |
| rensningsevne | purifying power |
| rensningsværk | purification facility |
| Rente | Angle |
| Renæssance | Renaissance |
