| coabitazione | cohabitation |
| Coachella Valley Music and Arts Festival | Coachella Valley Music and Arts Festival |
| coadiuvante | accomplice |
| Coadout | Coadout |
| coagulabile | coagulable |
| coagulamento | coagulation |
| coagulante | coagulant |
| coagulare | thicken |
| coagularsi | turn |
| coagulativo | coagulative |
| coagulato | clotted |
| coagulazione | coagulation |
| Coagulazione intravascolare disseminata | Disseminated intravascular coagulation |
| coagulo | curd |
| Coahuila | Coahuila |
| Coal Grove | Coal Grove |
| Coalbrookdale | Coalbrookdale |
| coalescenza | coalescence |
| coalizione | coalition |
| Coalizione multinazionale in Iraq | Multinational force in Iraq |
| Coarticolazione | Coarticulation |
| coassiale | coax |
| Coast Guard One | Army One |
| Coatlicue | Coatlicue |
| coattivo | coactive |
| coatto | show-off |
| coautore | coauthor |
