| cozza | mussel |
| cozzare | clash |
| cozzare contro | bump into |
| Coín | Angle |
| CP | CP |
| CPAN | CPAN |
| CPAP | Positive airway pressure |
| CPLD | Complex programmable logic device |
| CPP | CPP |
| CPU | CPU |
| CPU cache | CPU cache |
| CPUID | CPUID |
| CQ | CQ |
| CQD | CQD |
| CR | CR |
| CR-ROM | Compact Disc |
| cracker | cracker |
| Cracovia | Kraków |
| Cradle of Filth | Cradle of Filth |
| Craig Armstrong | Craig Armstrong |
| Craig Bellamy | Craig Bellamy |
| Craig Cameron Mello | Craig Mello |
| Craig Jones | Craig Jones |
| Craigavon Bridge | Craigavon Bridge |
| Craigellachie | Craigellachie |
| Craighall | Craighall |
| Crailsheim | Crailsheim |
| Craina | Timočka Krajina |
| Craintilleux | Craintilleux |
| Craiova | Craiova |
| Crambidae | Crambidae |
| crampo | cramp |
| Cranao | Cranaus |
| Cranbrook | Cranbrook |
| craniale | cranial |
| cranico | cranial |
| Cranidos | Cranidos |
| cranio | braincase |
| craniologia | craniology |
| Crans-près-Céligny | Crans-près-Céligny |
| Cranston | Cranston |
| craps | craps |
| crapulona | partygoer |
| crapulone | partygoer |
| Craseonycteris thonglongyai | Bumblebee Bat |
