| Cumulus | Cumulus |
| Cumulus humilis | Cumulus |
| Cunegonda | Kunigunde |
| cuneo | kile |
| Cunningham | Cunninghamhal |
| cuoca | kok |
| Cuoca Doris | Lunchlady Doris |
| cuocere | tørre |
| cuocersi | bage |
| cuoco | kok |
| cuoio | læder |
| Cuon alpinus | Dhole |
| Cuordipietra Famedoro | Guld-Iver Flintesten |
| cuore | hjerte |
| Cuore di tenebra | Mørkets hjerte |
| Cuore di un sistema operativo | Kerne |
| Cuore selvaggio | Vilde hjerter |
| Cuori in Atlantide | Atlantis |
| Cupid | Cupido |
| cupo | mørk |
| Cupo Mietitore | manden med leen |
| cupola | kuppel |
| Cupressaceae | Cypres-familien |
| Cupressus | Cypres |
| Cupressus sempervirens | Cypres |
| cura della salute | sundhedspleje |
| cura della salute occupazionale | bedriftssundhedstjeneste |
| curare | doktorere |
| Curaçao | Curaçao |
| Curculionidae | Snudebiller |
| Curculionoidea | Snudebiller |
| curcuma | gurkemeje |
| Curcuma longa | Gurkemeje |
| Curdi | Kurder |
| curdo | kurdisk |
| Curia | Curie |
| Curie | Curie |
| curio | curium |
| curiosità | nysgerrighed |
| curioso | besynderlig |
| Curitiba | Curitiba |
| Curlandia | Kurland |
| Curling | Curling |
| curriculum | studieplan |
| Cursed - Il maleficio | Varulv |
| curva | cirkel |
| Curva di Hubbert | Hubberts peak |
| Curva di Laffer | Lafferkurven |
| Curva di Phillips | Phillipskurven |
| Curva kappa | Kappa |
| curvare | bøje |
| curvarsi | bue |
| cuscinetto | leje |
| cuscino | pude |
| Cusco | Cusco |
| custodire | bevogte |
| Customer relationship management | CRM |
| customizzare | skræddersy |
| CUT | Klippe |
| Cutting Crew | Cutting Crew |
| Cutty Sark | Cutty Sark |
| Cyanea capillata | Rød brandmand |
| Cyanobacteria | Cyanobakterie |
| Cybercafe | Internetcafé |
| Cyberpunk | Cyberpunk |
| Cybersesso | Cybersex |
| Cybersquatting | Cybersquatting |
| Cycadaceae | Cykas |
| Cycadales | Cykas-ordenen |
| Cycadophyta | Cykas-ordenen |
| Cycas | Cykas |
| Cycas revoluta | Japansk Koglepalme |
| Cyclamen | Alpeviol |
| Cycling Manager | Cycling Manager-serien |
| Cydonia oblonga | Kvæde |
| Cydonia oblunga | Kvæde |
| Cygnus | Svane |
| Cygnus olor | Knopsvane |
| Cygwin | Cygwin |
