| clausole scritte in piccolo | det med småt |
| claustrofobia | klaustrofobi |
| Clavato | Binding |
| Clavicembalo | Cembalo |
| clavicola | kraveben |
| Clayton Anderson | Clayton Conrad Anderson |
| Clematis | Skovranke |
| Clematite | Skovranke |
| Clemens Brentano | Clemens Brentano |
| Clement Attlee | Clement Attlee |
| Clemente Alessandrino | Clemens af Alexandria |
| Clementine | Clementine-missionen |
| Cleopatra | Kleopatra |
| cleptomania | kleptomani |
| Clermont-Ferrand | Clermont-Ferrand |
| Clero | Gejstlighed |
| Clerodendrum | Skæbnetræ |
| clessidra | Timeglas |
| Cletus e Brandine Spuckler | Cletus Spuckler |
| Cleveland | Cleveland |
| Cleveland Abbe | Cleveland Abbe |
| Cleveland Browns | Cleveland Browns |
| Cleveland Indians | Cleveland Indians |
| Click Here To Exit | Click Here to Exit |
| Cliegg Lars | Cliegg Lars |
| Client | Klient |
| Client di posta | E-mail-klient |
| cliente | gæst |
| Cliff Burton | Cliff Burton |
| Cliff Richard | Cliff Richard |
| Clifton | Clifton |
| clima | klima |
| clima continentale | fastlandsklima |
| clima desertico | ørkenklima |
| clima equatoriale | ækvatorialt klima |
| clima mediterraneo | middelhavsklima |
| clima montano | bjergklima |
| clima oceanico | kystklima |
| Clima polare | Polarklima |
| Clima subartico | Subpolarklima |
| clima subtropicale | subtroper |
| Clima temperato | Tempereret klima |
| Clima tropicale | Vendekreds |
| climatologia | klimatologi |
| climax | klimaks |
| Climene | Klymene |
| clinica | sygehus |
| Clinofobia | Hypnofobi |
| Clint Eastwood | Clint Eastwood |
| Clinton | Clinton |
| Clipper | Klipper |
| Clitennestra | Klytaimnestra |
| clitoride | klitoris |
| Clive Owen | Clive Owen |
| Clive Sinclair | Clive Sinclair |
| Clive Staples Lewis | C.S. Lewis |
| Clivia | Clivia |
| Cloak e Dagger | Kappe |
| Clock | Ur |
| Clodomiro | Clodomer |
| Clonaggio genico | Løn-slægten |
| clonazione | kloning |
| Clone Wars | Clone Wars |
| Clonmel | Clonmel |
| Clorato di potassio | Kaliumklorat |
| Clorexidina | Klorhexidin |
| cloro | klor |
| clorofenoli | klorfenoler |
| clorofilla | klorofyl |
| clorofluorocarburi | CFC |
| Cloroformio | Kloroform |
| Clorometano | Metylklorid |
| cloroplasto | grønkorn |
| clorosi | klorose |
| clorurazione | kloring |
| cloruro | klorid |
| Cloruro di calcio | Kalciumklorid |
| cloruro di polivinile | polyvinylchlorid |
| Cloruro di sodio | Natriumklorid |
| Cloud City | Cloud City |
| Clover | Kløver |
| club | klub |
| Club América | Amerika |
| Club Atlético Arsenal | Arsenal |
| Club Atlético Boca Juniors | Boca Juniors |
| Club Atlético Osasuna | CA Osasuna |
| Club de Hockey Canadien | Montreal Canadiens |
| Club de Regatas Vasco da Gama | Vasco da Gama |
| Club di Roma | Romklubben |
| Club Olimpia | Olympia |
| Clube de Regatas do Flamengo | Clube de Regatas do Flamengo |
| Cluedo | Cluedo |
| Cluj | Cluj |
| Cluj-Napoca | Cluj-Napoca |
| Cluny | Cluny |
| Cluster | Klyngecomputer |
| Clyde Tombaugh | Clyde Tombaugh |
| CM | Tv reklame |
| CMYK | CMYK |
| CN Tower | CN Tower |
| CNC | CNC-maskine |
| Cnidaria | Nældecelledyr |
| CNN | CNN |
| Cnosso | Knossos |
| co-incenerimento | medforbrænding |
| coach | træner |
| coagulare | koagulere |
