| cyrillique | Cyrillic |
| cyrillisation | Cyrillization |
| Cyrillisation du chinois à partir du pinyin | Cyrillization of Chinese from pinyin |
| cyrl | scrambling |
| Cyrodiil | Cyrodiil |
| Cyrtodactylus | Cyrtodactylus |
| Cyrus | Cyrus |
| Cyrus Field | Cyrus West Field |
| Cyrus Ier | Cyrus I of Anshan |
| Cyrus II | Cyrus the Great |
| Cyrus le Jeune | Cyrus the Younger |
| Cyrus Vance | Cyrus Vance |
| Cyrénaïque | Cyrenaica |
| Cyrénaïsme | Cyrenaics |
| Cysoing | Cysoing |
| Cysticercose | Cysticercosis |
| cystine | cystine |
| cystite | cystitis |
| cystoscopie | cystoscopy |
| cystotomie | cystotomy |
| cystéine | cysteine |
| Cystéine protéase | Cysteine protease |
| Cythère | Kythira |
| cytise | laburnum |
| cyto- | cyto- |
| cytochimie | cytochemistry |
| cytochrome | cytochrome |
| Cytochrome oxydase | Cytochrome c oxidase |
| cytogénétique | cytogenetic |
| cytokine | cytokine |
| cytologie | cytology |
| cytologique | cytological |
| Cytométrie en flux | Flow cytometry |
| cytoplasme | cytoplasm |
| cytoplasmique | cytoplasmic |
| cytosine | cytosine |
| cytosol | cytosol |
| cytosolique | cytosolic |
| Cytosquelette | Cytoskeleton |
| Cytostatique | List of chemotherapeutic agents |
| cytotoxicité | cytotoxicity |
| cytotoxique | cytotoxic |
| Cyzique | Cyzicus |
| CZ | CZ |
| czar | tsar |
| Czarda | Jerry |
| Czartoryski | House of Czartoryski |
| Czeladź | Czeladź |
| Czesław Kiszczak | Czesław Kiszczak |
| Czesław Miłosz | Czesław Miłosz |
| Czesław Niemen | Czesław Niemen |
| Czesław Słania | Czesław Słania |
| Częstochowa | Częstochowa |
| Càrcer | Càrcer |
| Cápua | Capua |
| câblage | wiring |
| Câblage structuré | Structured cabling |
| câble | wire |
| Câble Bowden | Bowden cable |
| câble coaxial | coaxial cable |
| Câble de communication sous-marin | Submarine communications cable |
| Câble de distribution | Main drainage |
| câble de remorque | towrope |
