| Conza della Campania | Conza della Campania |
| Cooch Behar | Cooch Behar district |
| Cooch Beharenclaves | Indo-Bangladesh enclaves |
| Cookeilanden | Cook Islands |
| Cookeilanden dollar | Cook Islands dollar |
| Cookeilands voetbalelftal | Cook Islands national football team |
| Cookie | HTTP cookie |
| Cool Runnings | Cool Runnings |
| Cooley Distillery | Cooley |
| Coolio | Coolio |
| Cooper Car Company | Cooper Car Company |
| Coopereiland | Cooper Island |
| Cooperpaar | Cooper pair |
| Coopertest | Cooper test |
| Coordinated Universal Time | Coordinated Universal Time |
| COP | Coefficient of performance |
| Copa Airlines | Copa Airlines |
| Copa América | Copa América |
| Copa Catalunya | Football in Catalonia |
| Copa Chile | Copa Chile |
| Copa CONMEBOL | Copa CONMEBOL |
| Copa de la Liga | Copa de la Liga |
| Copa del Rey | Copa del Rey |
| Copa do Brasil | Copa do Brasil |
| Copa Federación de España | Copa Federación de España |
| Copa Interclubes UNCAF | Copa Interclubes UNCAF |
| Copa Latina | Latin Cup |
| Copa Libertadores | Copa Libertadores |
| Copa Master de Supercopa | Supercopa Masters |
| Copa Merconorte | Copa Merconorte |
| Copa Mercosur | Copa Mercosur |
| Copa Mustang | Colombian Professional Football |
| Copa NEXTEL Stock Car | Stock Car Brasil |
| Copa Sudamericana | Copa Sudamericana |
| Copacabana | Copacabana |
| copartnership | copartnership |
| Copaïs-meer | Lake Copais |
| COPEI | COPEI |
| Copernicaans | Copernican |
| copernicium | copernicium |
| Copernicum | Copernican period |
| Copernicus | Copernicus |
| Copiapiet | Copiapite |
| copie | copy |
| copieus | abounding |
| Coppa Italia | Coppa Italia |
| Coppa Titano | Coppa Titano |
| Coppename | Coppename River |
| Coppenbrügge | Coppenbrügge |
| Coppengrave | Coppengrave |
| Coppet | Coppet |
| Coprinaceae | Psathyrellaceae |
| coprofagie | coprophagy |
| Copropraxie | Copropraxia |
| Copycat misdaad | Copycat crimes |
| Copying Beethoven | Copying Beethoven |
| copyright | copyright |
| copywriter | copywriter |
| Copán | Copán |
| Copşa Mică | Copşa Mică |
| Coquelles | Coquelles |
| Coquimbo | Coquimbo Region |
| Cor | Horn |
| Cor Caroli | Cor Caroli |
| Cor-ten-staal | Weathering steel |
| Corantijn | Corantin |
| Corazon Aquino | Corazon Aquino |
| Corbeanca | Corbeanca |
| Corbehem | Corbehem |
| Corbeil-Essonnes | Corbeil-Essonnes |
