| Copán | Copán |
| coquet | kokettere |
| Coraciidae | Ellekrager |
| Coraciiformes | Skrigefugle |
| coral | koraller |
| Coral island | Atol |
| coral reef | koralrev |
| coral reef lagoon | koralrevlagune |
| Coral Sea | Koralhavet |
| Corall reef | Koralrev |
| Corazon Aquino | Corazon Aquino |
| Corbie | Ravnen |
| Corcovado | Cristo Redentor |
| cord | snor |
| Cordelia | Cordelia |
| Cordelia Chase | Cordelia |
| Cordillera Province | Bjergkæde |
| Cordoba | Cordoba |
| Cordova | Cordoba |
| corduroy | fløjl |
| Cordyline | Kordyline |
| core | kærne |
| Core melt accident | Kernefysisk nedsmeltning |
| core meltdown | kernesmeltning |
| Core sample | Gulerod |
| Corea | Korea |
| Coreper | Coreper |
| Corey Taylor | Corey Taylor |
| Corfu | Korfu |
| Corfu Prefecture | Korfu |
| coriander | koriander |
| Corinne Clery | Corinne Cléry |
| Corinth | Korinth |
| Corinthia | Korinth |
| Corinthian | Korinth |
| Corinthian order | Korintisk søjle |
| Coriolan Overture | Coriolanus |
| Coriolanus | Coriolanus |
| Coriolis effect | Corioliseffekten |
| Coriolis force | Corioliseffekten |
| cork | kork |
| cork oak | korkeg |
| cork-screw | proptrækker |
| corkscrew | proptrækker |
| cormorant | skarv |
| Cormorants | Årefodede |
| corn | majs |
| corn bunting | bomlærke |
| Cornaceae | Kornel-familien |
| Cornales | Kornel-ordenen |
| corncrake | engsnarre |
| cornea | hornhinde |
| Cornelius | Cornelius |
| Cornelius Caramel | Cornelius Fudge |
| Cornelius Coot | Kornelius Blisand |
| Cornelius Fudge | Cornelius Fudge |
| Cornelius Sulla | Lucius Cornelius Sulla |
| corner | hjørne |
| corner kick | hjørnespark |
| Corner-stone | Grundsten |
| Cornflakes | Cornflakes |
| cornflower | kornblomst |
| Cornhusker State | Nebraska |
| Cornish | kornisk |
| Cornish heath | Høst-Lyng |
| Corno Grande | Monte Corno |
| Cornouaille | Cornwall |
| Cornus alba | Hvid Kornel |
| Cornus canadensis | Canadisk Hønsebær |
| Cornus suecica | Svensk Hønsebær |
| Cornwall | Cornwall |
| corollary | korollar |
| Coromandel Coast | Coromandelkysten |
| Corona | Korona |
| Corona Australis | Sydlige Krone |
| Corona Borealis | Nordlige Krone |
| Coronary circulation | Kranspulsåre |
| coronation | kroning |
| Coronie District | Coronie |
| Coronis | Koronis |
| Corophium volutator | Slikkrebs |
| Corporate branding | Corporate branding |
| Corporate pension scheme | Pension |
| corporation | fagforening |
| corpse | lig |
| corpulent | tyk |
| correct | rigtig |
| corridor | korridor |
| corridor train | eksprestog |
| corridor-train | eksprestog |
| Corriere della Sera | Corriere della Sera |
| corrosion | korrosion |
| corrosion inhibitor | rustbeskyttelsesmiddel |
| corruption | korruption |
| Corrèze | Corrèze |
| Corrèze River | Corrèze |
| Corse | Korsika |
| Corse-du-Sud | Corse-du-Sud |
| corset | korset |
| Corsetmaker | Korsetmager |
| Corsica | Korsika |
| Corsican | Korsika |
| Corsican man | Korsika |
| Corsican woman | Korsika |
| Cort Adeler | Cort Sivertsen Adeler |
| Corte | Hof |
| Cortes | Hof |
| Cortes Generales | Cortes |
| Corto Maltese | Corto Maltese |
| corundum | korund |
| Corunna | A Coruña |
| Coruña | A Coruña |
| corvette | korvet |
| Corvidae | Kragefugle |
| Corvo | Ravnen |
| Corvus | Ravnen |
| Corvée | Hoveri |
| Cory in the House | Cory I det hvide hus |
| Corydalis lutea | Gul Lærkespore |
| Corylus avellana | Almindelig Hassel |
| Cos | Kos |
| cosmetic industry | kosmetikindustri |
| cosmetologist | kosmetiker |
| Cosmic inflation | Inflation |
| Cosmic microwave background radiation | Kosmisk baggrundsstråling |
| cosmic radiation | kosmisk stråling |
| Cosmic ray | Kosmisk stråling |
| cosmodrome | rumhavn |
| Cosmological Principle | Kosmologiske princip |
| cosmology | kosmologi |
| cosmopolite | verdensborger |
| Cossack | Kosak |
| cost | omkostninger |
| cost increase | forhøjelse af omkostningerne |
| cost reduction | omkostningsreduktion |
| cost-benefit | lønsomhed |
| cost-benefit analysis | cost-benefit-analyse |
| Costa | Ribben |
| Costa Daurada | Guldkysten |
| Costa Rica | Costa Rica |
| costly | værdifuld |
| Così fan tutte | Così fan tutte |
| Cote d'Ivoire | Elfenbenskysten |
| Coteau du Missouri | Missouri |
| Cotentin Peninsula | Cotentin |
| Coton de Tulear | Coton de Tulear |
| Cotoneaster integerrimus | Rød Dværgmispel |
| Cotonou | Cotonou |
| Cotract killing | Lejemord |
| cottage cheese | hytteost |
| Cottbus | Cottbus |
