| convocare | call |
| convocazione | gathering |
| convoglio | escort |
| convolare a nozze | tie the knot |
| convolvolo | bindweed |
| Convolvulaceae | Convolvulaceae |
| convulsione | fit |
| convulsivo | convulsive |
| convulso | frantic |
| convìvere | live together |
| Conway | Conway |
| Conwy | Conwy |
| Conza della Campania | Conza della Campania |
| coobare | cohobate |
| coobazione | cohobation |
| Cooke | Cooke |
| Cookie | HTTP cookie |
| Cool Biz | Cool Biz campaign |
| Cool hunting | Coolhunting |
| Cool Runnings - Quattro sottozero | Cool Runnings |
| Coolidge Dam | Coolidge Dam |
| coolie | coolie |
| Coolio | Coolio |
| Cooma | Cooma |
| cooperante | enlisting |
| cooperare | collaborate |
| cooperativa | companionship |
| Cooperative learning | Cooperative learning |
| Cooperativistico | Cooperative |
| cooperativo | cooperative |
| cooperatore | collaborator |
| cooperatrice | collaborator |
| cooperazione | collaboration |
| cooperazione internazionale | international co-operation |
| cooperazione per lo sviluppo | development co-operation |
| Cooperazione politica europea | European Political Cooperation |
| cooperazione scientifica | scientific co-operation |
| cooptare | co-opt |
| coorbitale | coorbital |
| Coordinamento internazionale per il Decennio | International Coalition for the Decade |
| coordinare | coordinate |
| coordinata | coordinate |
| Coordinate angolari | Angular coordinates |
| Coordinate baricentriche | Barycentric coordinates |
| Coordinate cartesiane | Cartesian coordinate system |
| Coordinate celesti | Celestial coordinate system |
| Coordinate comoventi | Comoving distance |
| Coordinate generalizzate | Generalized coordinates |
| Coordinate geografiche | Geographic coordinate system |
| Coordinate omogenee | Homogeneous coordinates |
| Coordinate paraboliche | Parabolic coordinates |
| Coordinate sferiche | Spherical coordinates |
| coordinato | coordinate |
| coordinatore | coordinating |
