| Couscous | couscous |
| Cuscus | cuscus |
| Boy Scout | Boy Scout |
| Couch | couch |
| Couleur | color colour trump caliber calibre hue kind |
| Couloir | couloir |
| Coulomb | coulomb |
| Countess | countess |
| Coupon | coupon |
| Cousin | cousin |
| Cousine | cousin |
| Dessous | lingerie |
| Houston | Houston |
| Toulouse | Toulouse |
| Zuschuss | grant subsidy |
| Scots | Scots |
| Cougar | cougar |
| Count | count |
| Countdown | countdown |
| Counter | counter |