| cinema | biograf |
| Cinematografie | Film |
| Cinnaber | Cinnober |
| Cipresfamilie | Cypres-familien |
| circa | cirka |
| Circe | Kirke |
| Circuit Magny-Cours | Nevers |
| Circumcisie | Omskæring |
| Circumflex | Cirkumfleks |
| Circumpolair | Cirkumpolar |
| circus | cirkus |
| cirkel | cirkel |
| Cirkel van Willis | Circulus arteriosus cerebri |
| Cirkeldiagram | Lagkagediagram |
| cirkelredenering | cirkelslutning |
| Cirkelsegment | Cirkeludsnit |
| cirkelzaag | rundsav |
| Cis-trans-isomerie | Cis-trans-isomeri |
| Cisco Systems | Cisco Systems |
| Cisterciënzers | Cistercienserordenen |
| Cistus | Soløjetræ |
| Cistus ladanifer | Soløjetræ |
| Cistus salviifolius | Soløjetræ |
| Citadel van Boeda | Citadel |
| Citalopram | Citalopram |
| Citaten van Voorzitter Mao Zedong | Maos lille røde |
| citer | citer |
| CITIC Plaza | CITIC Plaza |
| Citizen Kane | Den store mand |
| Citizendium | Citizendium |
| citroen | citron |
| Citroengras | Citrongræs |
| Citroenzuurcyclus | Citronsyrecyklus |
| Citroën | Citroën |
| Citroën Jumper | Fiat Ducato |
| Citroën Méhari | Citroën Méhari |
| Citroën XM | Citroën XM |
| Città di Castello | Città di Castello |
| City of Chester | Chester |
| City of Heroes | City of Heroes |
| City of Leeds | Leeds |
| City of London | City of London |
| Ciudad de La Habana | Havana |
| Ciudad del Carmen | Carmen |
| Ciudad Juárez | Ciudad Juárez |
| Ciudadela | Citadel |
| Civetkatachtigen | Desmerdyr |
| Civetkatten | Desmerdyr |
| civiel | civil |
| Civil War | Borgerkrig |
| civilisatie | civilisering |
| Civilization | Civilization |
| Cixi | Enkekejserinde Cixi |
| CKY | CKY |
| Cladistiek | Kladistik |
| Clanbase | Clanbase |
| Clancy Wiggum | Clancy Wiggum |
| clandestien | hemmelig |
| Clara Bow | Clara Bow |
| Clara Schumann | Clara Schumann |
| Clara van Assisi | Clara af Assisi |
| Clara Zetkin | Clara Zetkin |
| Clare | County Clare |
| Clare County | County Clare |
| Clarence Melvin Zener | Clarence Melvin Zener |
| Clarence Seedorf | Clarence Seedorf |
| clarificeren | uddybe |
| Clarion | Clarion |
| Clarión | Clarion |
| Clark Gable | Clark Gable |
| Claro | Lys |
| Classificatie en Evolutie | Systema naturae |
| Classificatie van de dinosauriërs | Dinosaurus |
| Claude Chabrol | Claude Chabrol |
| Claude Criquielion | Claude Criquielion |
| Claude Debussy | Claude Debussy |
| Claude Jade | Claude Jade |
| Claude Monet | Claude Monet |
| Claudia Cardinale | Claudia Cardinale |
| Claudio Monteverdi | Claudio Monteverdi |
| Claudius | Claudius |
| Claudius Gothicus | Claudius II |
| Claudius I | Claudius |
| Claudius Ptolemaeus | Ptolemæus |
| Claus Schenk von Stauffenberg | Claus von Stauffenberg |
| claustrofobie | klaustrofobi |
| Clave | Nøgle |
| Clavecimbel | Cembalo |
| Claves | Claves |
| Clavier | Klaviatur |
| Clay County | Clay County |
| Clemens Brentano | Clemens Brentano |
| Clemens van Alexandrië | Clemens af Alexandria |
| Clementine | Clementine-missionen |
| Cleopatra Selena | Cleopatra Selene |
| Cleopatra Selena II | Cleopatra Selene |
| Clermont-Ferrand | Clermont-Ferrand |
| Clethraceae | Konvalbusk-familien |
| Cletus Spuckler | Cletus Spuckler |
| Cleveland | Cleveland |
| Cleveland Abbe | Cleveland Abbe |
| Cleveland Browns | Cleveland Browns |
| Cleveland Indians | Cleveland Indians |
| Cliens | Klient |
| Cliff Burton | Cliff Burton |
| Cliff Richard | Cliff Richard |
| Cliffoney | Cliffony |
| Clifton | Clifton |
