| custodia | zorg |
| custodia protettiva | gevangenisneming om veiligheidsredenen |
| custodire | bewaken |
| custodire gelosamente | koesteren |
| Custom | Custom |
| Customer relationship management | Customer Relationship Management |
| Cuthred di Wessex | Cuthred van Wessex |
| cuticola | opperhuid |
| cutrettola | kwikstaart |
| Cutting Crew | Cutting Crew |
| Cuttura | Cuttura |
| Cutty Sark | Cutty Sark |
| Cuverville | Cuverville |
| Cuvetta | Cuvet |
| Cuvier | Cuvier |
| Cuvieronius | Cuvieronius |
| Cuvry | Cuvry |
| Cuxhaven | Cuxhaven |
| CUY | Cuy |
| Cuza Vodă | Cuza Vodă |
| Cuzance | Cuzance |
| Cuzdrioara | Cuzdrioara |
| CV | CV |
| Cvicino | By |
| CVO | CVO |
| CW | CW |
| Cyanobacteria | Blauwalgen |
| cyanocitta cristata | blauwe gaai |
| Cybercafe | Internetcafé |
| Cybergrind | Cybergrind |
| Cyberpunk | Cyberpunk |
| Cybersesso | Cybersex |
| Cybersquatting | Domeinkaper |
| Cybill Shepherd | Cybill Shepherd |
| cyborg | cyborg |
| Cycadaceae | Cycadaceae |
| Cycadales | Palmvarens |
| Cycadophyta | Palmvarens |
| Cycas | Cycas |
| Cycas circinalis | Ingerolde palmvaren |
| Cycas revoluta | Cycas revoluta |
| cyclette | hometrainer |
| Cyclic redundancy check | Cyclic Redundancy Check |
| Cyclopaedia | Cyclopaedia |
| Cygnus | Zwanen |
| Cygnus atratus | Zwarte zwaan |
| Cygnus cygnus | Wilde zwaan |
| Cygnus olor | Knobbelzwaan |
| Cygwin | Cygwin |
| Cymbopogon | Citroengras |
| Cyndi Lauper | Cyndi Lauper |
| Cynegils del Wessex | Cynegils |
| Cynewulf del Wessex | Cynewulf van Wessex |
| Cynictis penicillata | Vosmangoest |
| Cynocephalus volans | Filipijnse vliegende kat |
| Cynodontia | Cynodonten |
| Cynogale bennettii | Ottercivetkat |
| Cynognathus | Cynognathus |
| Cynomys | Prairiehonden |
| Cynthia Nixon | Cynthia Nixon |
| Cynthia Rothrock | Cynthia Rothrock |
| Cyperaceae | Cypergrassenfamilie |
| Cyperus alternifolius | Cyperus alternifolius |
| Cyperus esculentus | Knolcyperus |
| Cyperus papyrus | Papyrusriet |
| Cyphomandra betacea | Tamarillo |
| Cypress Hill | Cypress Hill |
| Cyprinidae | Eigenlijke karpers |
| Cyprinodontiformes | Tandkarpers |
| Cypripedium calceolus | Vrouwenschoentje |
| Cystophora cristata | Klapmuts |
| Cystus | Cistus salviifolius |
| CZ | Catanzaro |
| Czech Airlines | CSA Czech Airlines |
| Czeslaw Milosz | Czesław Miłosz |
| Czesław Niemen | Czesław Niemen |
| Częstochowa | Częstochowa |
