| clavo | nagle |
| clavo de olor | kryddernellike |
| Clavo de rosca | Skrue |
| clavícula | kraveben |
| Clematis | Skovranke |
| Clement Attlee | Clement Attlee |
| Clemente Brentano | Clemens Brentano |
| Clemente de Alejandría | Clemens af Alexandria |
| Clementina | Clementine-missionen |
| Clementine | Clementine-missionen |
| Cleopatra | Kleopatra |
| Cleopatra Selene | Cleopatra Selene |
| Cleopatra Selene II | Cleopatra Selene |
| cleptomanía | kleptomani |
| Clermont-Ferrand | Clermont-Ferrand |
| Clero | Gejstlighed |
| Clerodendrum | Skæbnetræ |
| Clethra | Konvalbusk-slægten |
| Clethraceae | Konvalbusk-familien |
| Cletus Spuckler | Cletus Spuckler |
| Cleveland | Cleveland |
| Cleveland Abbe | Cleveland Abbe |
| Cleveland Browns | Cleveland Browns |
| Cleveland Indians | Cleveland Indians |
| Cliegg Lars | Cliegg Lars |
| cliente | kunde |
| Cliente BitTorrent | Sammenligning af BitTorrent software |
| Cliente de correo electrónico | E-mail-klient |
| clientela | klientel |
| Cliff Burton | Cliff Burton |
| Cliff Richard | Cliff Richard |
| clima | vejr |
| clima continental | fastlandsklima |
| clima de desierto | ørkenklima |
| clima de montaña | bjergklima |
| clima ecuatorial | ækvatorialt klima |
| Clima mediterráneo | middelhavsklima |
| clima oceánico | kystklima |
| Clima polar | Polarklima |
| Clima templado | Tempereret klima |
| Clima tropical | Vendekreds |
| climatización | luftkonditionering |
| climatología | klimatologi |
| Climena | Klymene |
| Climograma | Hydrotermfigur |
| Clinker portland | Klinkbygning |
| Clint Eastwood | Clint Eastwood |
| Clinton | Clinton |
| Clipper | Klipper |
| Clitemnestra | Klytaimnestra |
| clitoris | klitoris |
| clivar | kløve |
| Clive Owen | Clive Owen |
| Clive Sinclair | Clive Sinclair |
| Clivia | Clivia |
| cloch | kobling |
| cloche | kobling |
| Clodomiro | Clodomer |
| clonación | kloning |
| Clonmel | Clonmel |
| cloración | kloring |
| Clorato de potasio | Kaliumklorat |
| Clorhexidina | Klorhexidin |
| cloro | klor |
| clorofenoles | klorfenoler |
| clorofila | klorofyl |
| clorofluorocarbonos | CFC |
| clorofluorohidrocarburos | hydrochlorflourkarboner |
| Cloroformo | Kloroform |
| cloroplasto | grønkorn |
| clorosis | klorose |
| cloruro | klorid |
| Cloruro amónico | Ammoniumklorid |
| Cloruro de calcio | Kalciumklorid |
| Cloruro de hidrógeno | Saltsyre |
| Cloruro de metileno | Metylenklorid |
| Cloruro de sodio | Natriumklorid |
| Cloruro sódico | Natriumklorid |
| cloruros | klorid |
| Cloto | Klotho |
| Clover | Kløver |
| club | klub |
| Club América | Amerika |
| Club Atlético Boca Juniors | Boca Juniors |
| Club Atlético de Madrid | Atlético de Madrid |
| Club Atlético Osasuna | CA Osasuna |
| Club Brujas | Club Brügge |
| Club de Conquistadores | Adventistspejderne |
