| Château de Talcy | Château de Talcy |
| Château Frontenac | Château Frontenac |
| Château Lafite-Rothschild | Château Lafite Rothschild |
| Châteaurenard | Châteaurenard |
| Châteauroux | Châteauroux |
| Châtel-Saint-Denis | Châtel-Saint-Denis |
| Châtel-sur-Montsalvens | Châtel-sur-Montsalvens |
| Châtelain | Lord |
| Châtelet-Les halles | Châtelet - Les Halles |
| Châtellerault | Châtellerault |
| Châtelperroniense | Châtelperronian |
| Châtenay-Malabry | Châtenay-Malabry |
| Châtillens | Châtillens |
| Chèsopelloz | Chèsopelloz |
| Chénens | Chénens |
| Chéserex | Chéserex |
| Chêne-Bougeries | Chêne-Bougeries |
| Chêne-Bourg | Chêne-Bourg |
| Chêne-Pâquier | Chêne-Pâquier |
| chía | Shi'a |
| chícharo | bean |
| Chísme | The gadget |
| chófer | driver |
| Chô | Japanese units of measurement |
| Chłodnik | Cold borscht |
| Chō | Li |
| Chōjirō Sasakibe | Chōjirō Sasakibe |
| Chōon | Chōon |
| Chūnin de Konoha | List of Konoha Chunin |
| Chūō-ku | Chūō-ku |
| CI | IQ |
| Cian | Cyan |
| cianato | cyanate |
| Cianoacetileno | Cyanoacetylene |
| cianoacrilato | cyanoacrylate |
| Cianoborohidruro de sodio | Sodium cyanoborohydride |
| Cianodiacetileno | Cyanodiacetylene |
| cianosis | cyanosis |
| cianotipo | blueprint |
| cianuro | potassium cyanide |
| Cianuro de hidrógeno | Hydrogen cyanide |
| cianuro de potasio | potassium cyanide |
| Cianuro espumoso | Sparkling Cyanide |
| cianótico | cyanotic |
| Cibeles | Cybele |
| cibelina | sable |
| ciber- | cyber- |
| Ciber-acoso | Cyber-bullying |
| Ciberactivismo | Internet activism |
| Ciberantropología | Anthropology of cyberspace |
| ciberbitácora | blog |
| Cibercafé | Cybercafé |
| ciberespacio | cyberspace |
| ciberguerra | cyberwarfare |
| Ciberjaya | Cyberjaya |
| Ciberliteratura | Electronic literature |
| cibernética | cybernetics |
| Cibernética de segundo orden | Second-order cybernetics |
| ciberokupa | cybersquatter |
| Ciberpoesía | Digital Poetry |
| ciberterrorismo | cyberterrorism |
| Cibona Zagreb | KK Cibona |
| Ciboney | Ciboney |
| ciborg | cyborg |
| Cibotiaceae | Cibotium |
| Cicadomorpha | Cicadomorpha |
| cicatriz | scar |
| cicatriz de viruelas | pock |
| cicatrización | cicatrization |
| cicatrizar | scar over |
| Cicer | Cicer |
| Cicer arietinum | Chickpea |
| cicero | cicero |
