| Retrograad | Prográdní dráha |
| Retrograde baan | Prográdní dráha |
| Return | Carriage return |
| Retz | Retz |
| reu | pes |
| reuk | vůně |
| reukzin | čich |
| reus | obr |
| reusachtig | obrovský |
| Reuss | Reuss |
| Reuss jongere linie | Reuss |
| Reuss oudere linie | Reuss |
| Reut | Reut |
| Reuters | Reuters |
| Reutlingen | Reutlingen |
| reuzen- | obrovský |
| Reuzenbekhaai | Žralok velkoústý |
| Reuzenbovist | Pýchavka obrovská |
| Reuzenelandantilope | Antilopa Derbyho |
| Reuzengebergte | Krkonoše |
| Reuzeninktvis | Krakatice obrovská |
| Reuzenlevensboom | Zerav obrovský |
| Reuzenmanta | Rejnok manta |
| Reuzenpaardenstaart | Přeslička největší |
| Reuzenpanda | Panda velká |
| reuzenpijnboom | sekvoj |
| Reuzenstern | Rybák velkozobý |
| revelatie | zjevení |
| Reverend | Důstojnost |
| Reverse Address Resolution Protocol | Reverse Address Resolution Protocol |
| Reverse engineering | Zpětné inženýrství |
| Reversi | Othello |
| revolte | vzpoura |
| revolutie | revoluce |
| revolutionair | revolucionář |
| Revolutionaire Strijdkrachten van Colombia | Revoluční ozbrojená fronta Kolumbie |
| revolver | revolver |
| revue | revue |
| Revúca | Revúca |
| Rex | Král |
| Reykjahlíð | Reykjahlíð |
| Reykjanes | Reykjanes |
| Reykjanesbær | Reykjanesbær |
| reykjavik | Reykjavík |
| Reynold | Python |
| Reyðarfjörður | Reyðarfjörður |
| Reza Pahlavi | Rezá Šáh Pahlaví |
| reçu | paragon |
| reëel | skutečný |
| Reëel getal | Reálné číslo |
| Reşiţa | Reşiţa |
| RGB kleursysteem | RGB |
| RGB-kleursysteem | RGB |
| Rhadamanthys | Rhadamanthys |
| Rhamphorhynchoidea | Rhamphorhynchoidea |
| Rhapsody of Fire | Rhapsody of Fire |
| Rhea | Rheia |
| Rheiformes | Rhea |
| RheinEnergieStadion | Köln Arena |
| Rhincodontidae | Žralok obrovský |
| Rhinoceros | Nosorožcovití |
| Rhinocerus | Nosorožcovití |
| Rhode | Rhode |
| Rhode Island | Rhode Island |
| Rhodes | Rhodos |
| Rhodesië | Rhodesie |
| rhodium | rhodium |
| Rhythm-and-blues | Rhythm and blues |
| Rhätische Bahn | Rhétská dráha |
| Rhône | Rhône |
| Rhône-Alpes | Rhône-Alpes |
| Rhônevallei | Rhône |
| Riaad | Rijád |
| rib | žebro |
| Ribe | Ribe Amt |
| ribfluweel | manšestr |
| Ribkwallen | Žebernatky |
| Ribose | Ribosa |
| Ribosomaal RNA | RRNA |
| Ribosomaal-RNA | RRNA |
| Ribosoom | Ribozom |
| Ricardo Zonta | Ricardo Zonta |
| Riccardo Paletti | Riccardo Paletti |
| Rice Lake | Rice Lake |
| Richard | Richard |
| Richard Abegg | Richard Wilhelm Heinrich Abegg |
| Richard Adolf Zsigmondy | Adolf Richard Zsigmondy |
| Richard Bach | Richard David Bach |
| Richard Brautigan | Richard Brautigan |
| Richard Buckminster Fuller | Buckminster Fuller |
| Richard Burton | Richard Burton |
| Richard Chamberlain | Richard Chamberlain |
| Richard Cromwell | Richard Cromwell |
| Richard David Hughes | Richard Hughes |
| Richard Dawkins | Richard Dawkins |
| Richard Dean Anderson | Richard Dean Anderson |
| Richard Feynman | Richard Feynman |
| Richard Gasquet | Richard Gasquet |
| Richard Gatling | Richard Gatling |
| Richard Gere | Richard Gere |
| Richard I van Engeland | Richard Lví srdce |
| Richard I van Normandië | Richard Lví srdce |
| Richard Krajicek | Richard Krajicek |
| Richard Meier | Richard Meier |
| Richard Nixon | Richard Nixon |
| Richard Owen | Richard Owen |
| Richard Rorty | Richard Rorty |
| Richard Strauss | Richard Strauss |
| Richard van Cornwall | Richard z Cornwallu |
| Richard von Mises | Richard von Mises |
| Richard Wagner | Richard Wagner |
| Richard Willstätter | Richard Martin Willstätter |
| Richard Winters | Richard Winters |
| Richard Wright | Richard Wright |
| Richie Sambora | Richie Sambora |
| Richmond | Richmond |
| Richmond Park | Richmond Park |
| Richmond upon Thames | Richmond |
| Richteren | Kniha Soudců |
| richting | směr |
| richtingscoëfficient | svah |
| Richárd Réti | Richard Réti |
| Rick Rubin | Rick Rubin |
| Rick Wakeman | Rick Wakeman |
| ridder | rytíř |
| ridderlijkheid | galantnost |
| ridderschap | rytířství |
| Ridderzuring | Šťovík tupolistý |
| Riddler | Sfinx |
| Ride the Lightning | Ride the Lightning |
| Riegel am Kaiserstuhl | Rigel |
| riek | hrábě |
| riem | pásek |
| Riemann-zeta-functie | Riemannova funkce zeta |
| Riemannintegratie | Riemannův integrál |
| Riemschijf | Kladka |
| Riesigk | Riesigk |
| Rietgors | Strnad rákosní |
| Rieti | Provincie Rieti |
| rietje | slámka |
| Rietzanger | Rákosník proužkovaný |
| Rift | Rift |
| Riga | Riga |
| Rigel | Rigel |
| rigide | tuhý |
| Rihanna | Rihanna |
| rij | řádek |
| Rij van Fibonacci | Fibonacciho posloupnost |
| rijbewijs | řidičský průkaz |
| rijden | řídit |
| rijder | jezdec |
| Rijeka | Rijeka |
