| conduite principale d'eau | water main |
| Conduite à gauche | Left-hand drive |
| conduits aérifères | airways |
| conduits respiratoires | airways |
| Condylarthra | Condylarth |
| condyle | condyle |
| Condé-en-Brie | Condé-en-Brie |
| Cone de la lumiere du passe | Past light cone |
| Cone de lumiere | Light cone |
| Cone de lumiere du future | Future light cone |
| Cone McCaslin | Jason McCaslin |
| Coneheads | Coneheads |
| Conepatus leuconotus | Eastern Hog-nosed Skunk |
| Conepatus mesoleucus | Western Hog-nosed Skunk |
| Conepatus semistriatus | Striped Hog-nosed Skunk |
| Coney Island | Coney Island |
| confection | sweets |
| Confection pour hommes | Gents outfitter |
| Confederación general del trabajo | Confederación General del Trabajo |
| Confesion | Confession |
| confesser | acknowledge |
| Confessio Belgica | Belgic Confession |
| confession | acknowledgement |
| Confession de La Rochelle | Gallic Confession |
| confessional | confessional chair |
| confessionnal | confessional |
| Confessions Tour | Confessions Tour |
| confetti | confetti |
| confiance | dependency |
| confiance en soi | aplomb |
| confiant | positive |
| confidemment | confidently |
| confidence | confidentiality |
