| codorniz | vagtel |
| coeficiente | koefficient |
| Coeficiente binomial | Binomialkoefficient |
| Coeficiente de conductividad térmica | Specifik varmeledningsevne |
| Coeficiente de dilatación | Varmeudvidelseskoefficient |
| Coeficiente de Gini | Gini-koefficient |
| Coelacanthimorpha | Coelacanth |
| Coenraad Jacob Temminck | Coenraad Jacob Temminck |
| coerción | tvang |
| Coffea | Kaffe-slægten |
| Coffea arabica | Ægte Kaffe |
| Cofidis | Cofidis |
| cogeneración | kombineret produktion |
| coger | kneppe |
| Coger al vuelo | Snatch |
| Cogito ergo sum | Cogito ergo sum |
| Cognac | Cognac |
| cognición | kognition |
| cognitivo | kognitiv |
| cogorza | fuldskab |
| cohechar | bestikke |
| cohecho | bestikkelse |
| Cohete | Raket |
| Cohete de señales | Flare |
| Cohete espacial | Raket |
| Cohors quinquagenaria peditata | Kohort |
| coima | bestikkelse |
| coincidir | overlappe |
| coito | samleje |
| Cojedes | Cojedes |
| cojinete | leje |
| cojo | forkrøblet |
| cojones | nosser |
| cojudo | hingst |
| cojín | pude |
| cojón | testikel |
| col | kål |
| col de Bruselas | rosenkål |
| Col du Tourmalet | Col du Tourmalet |
| cola | hale |
| colaborar | samarbejde |
| colador | sigte |
| colar | snyde |
| colcha | tæppe |
| colchón | madras |
| Coldplay | Coldplay |
| coleccionar | samle |
| coleccionista | samler |
| colección | samling |
| Colección de fieras | Zoologisk have |
| Colección de libros | Halskæde |
| Colect | Børs |
| colectivo | bus |
| colector solar | solfanger |
| colega | kollega |
| colegio | skole |
| Colegio de Europa | Europakollegiet |
| Colegio Eton | Eton College |
| Colegio Hogwarts de Magia y Hechicería | Hogwarts |
| Coleman Hawkins | Coleman Hawkins |
| Coleoptera | Biller |
| Coleslaw | Coleslaw |
| Colesterol | Kolesterol |
| coleópteros | biller |
| Colgamiento | Hængning |
| coliflor | blomkål |
| Coliidae | Musefugle |
| Coliiformes | Musefugle |
| colilla | skod |
| Colima | Colima |
| colimbo | hvidnæbbet |
| colimbo ártico | sortstrubet lom |
| Colin Farrell | Colin Farrell |
| Colin Firth | Colin Firth |
| Colin Greenwood | Colin Greenwood |
| Colin Maclaurin | Colin Maclaurin |
| Colin McRae | Colin McRae |
| Colin Powell | Colin Powell |
| colina | bakke |
| Colina Capitolina | Kapitol |
| Colina de Tara | Tara |
| Colina Vaticana | Vatikanstaten |
| colinabo | kålroe |
| Coliseo de Roma | Colosseum |
| colitis | diare |
| Collage | Collage |
| collar | hundehalsbånd |
| Collar de animal | Hundesnor |
| Colleen McCullough | Colleen McCullough |
| College | Seminarium |
| Collembola | Springhaler |
| collera | manchetknap |
| Collie de la frontera | Border Collie |
| Collision Course | Collision Course |
| colmena | bistade |
| colmenera | biavler |
| colmenero | biavler |
| colmillo | hugtand |
| colocado | høj |
| colocar | stille |
| Colocasia esculenta | Tarot |
| Colofonía | Kolofonium |
| coloidal | kolloid |
| Coloide | Kolloid |
| coloideo | kolloid |
| Colombes | Colombes |
| Colombia | Colombia |
| colombina | akeleje |
| Colombo | Colombo |
| colona | kolonist |
| colonia | koloni |
| Colonia administrativa | Koloni |
| Colonia de Adén | Aden |
| Colonia de la Columbia Británica | Britisk Columbia |
| colonia de paracaidistas | slumkvarter |
| Colonia del Cabo | Kapkolonien |
| Colonia del Río Orange | Orange River Colony |
| Colonia penal | Straffekoloni |
| colonia proletaria | slumkvarter |
| colonial | kolonial |
| colonialismo | kolonialisme |
| colonización | kolonisering |
| Colonización curlandesa de América | Kurlands amerikanske kolonisering |
| Colonización española en América | Spaniens kolonisering af Amerika |
| Colonización europea de América | Koloniseringen af Amerika |
| colonizador | kolonist |
| Colonna | Kolonne |
| colono | kolonist |
| coloquial | dagligsprog |
| coloquio | kollokvium |
| color | farve |
| Color de ojos | Øjenfarve |
| Color primario | Primærfarver |
| Color rosa | Rose |
| Color sable | Sort |
| Color secundario | Sekundærfarver |
| Color terciario | Tertiærfarver |
| Colorado | Colorado |
| Colorado Rockies | Colorado Rockies |
| colorante | farvestof |
| Colorante índigo | Indigo |
| colorantes | farvestof |
| colorar | farve |
| colorear | farve |
| colores HTML | Web-sikre farver |
| colorete | rouge |
| colorido | farverig |
| colorimetriea | kolorimetri |
| Coloso de Rodas | Kolossen på Rhodos |
| Colossal Cave Adventure | Adventurespil |
| Colossus | Colossus |
| Colour | Farve |
| Columba | Duen |
| Columba de Iona | Duen |
| Columba oenas | Huldue |
| Columba palumbus | Ringdue |
| Columbia | Columbia |
| Columbia Británica | Britisk Columbia |
| Columbia Records | Columbia Records |
