| clinico | clínico |
| Clinker di cemento | Clinker portland |
| Clint Eastwood | Clint Eastwood |
| Clinton | Clinton |
| Clio | Clío |
| Cliometria | Cliometría |
| clip | corte |
| Clipart | Clip art |
| clipeo | clípeo |
| Clistene | Clístenes |
| Clistene di Sicione | Clístenes de Sición |
| clistere | enema |
| Clitellata | Clitellata |
| Clitennestra | Clitemnestra |
| clitoride | clítoris |
| clitoridectomia | clitoridectomía |
| Clive Barker | Clive Barker |
| Clive Burr | Clive Burr |
| Clive Owen | Clive Owen |
| Clive Sinclair | Clive Sinclair |
| Clive Staples Lewis | C. S. Lewis |
| Clivia | Clivia |
| Clizia | Clitia |
| cloaca | alcantarilla |
| Cloaca Massima | Cloaca Maxima |
| Cloak e Dagger | Manto terrestre |
| Cloaking | Cloaking |
| cloche | sombrero de campana |
| Clock | Reloj |
| Clodia Pulcra | Clodia |
| Clodio Albino | Clodio Albino |
| Clodione | Clodion |
| Clodomiro | Clodomiro |
| Clodoveo | Clodoveo I |
| Clodoveo I | Clodoveo I |
| Clodoveo II | Clodoveo II |
| Clodoveo III | Clodoveo III |
| Clodoveo IV | Clodoveo IV |
| Clonaggio genico | Acer |
| clonare | reproducir asexualmente |
| Clonazepam | Clonazepam |
| clonazione | clonación |
| clone | clon |
| Clone Trooper | Clone Troopers |
| Clone Wars | Guerra de los Clones |
| Clonmel | Clonmel |
| Cloracne | Cloracné |
| cloralio | cloral |
| Cloramfenicolo | Cloranfenicol |
| clorato | clorato |
| clorazione | desinfección con cloro |
| Clordiazepossido | Clordiazepóxido |
| Clorexidina | Clorhexidina |
| clorite | clorita |
| cloro | cloro |
| clorofenoli | clorofenoles |
| clorofilla | clorofila |
| clorofluorocarburi | clorofluorocarbonos |
| cloroformio | cloroformo |
| cloroformizzare | cloroformizar |
| clorogenico | clorogénico |
| cloroplasto | cloroplasto |
| clorosi | clorosis |
| Clorpromazina | Clorpromazina |
| clorurare | tratar con cloro |
| clorurazione | desinfección con cloro |
| cloruro | cloruro |
| Cloruro di calcio | Cloruro de calcio |
| cloruro di polivinile | policloruro de vinilo |
| Cloruro di potassio | Cloruro de potasio |
| cloruro di sodio | cloruro de sodio |
| Cloruro di tionile | Cloruro de tionilo |
| Cloruro mercurico | Cloruro mercúrico |
| Cloruro mercuroso | Cloruro mercúrico |
| Close to Home | Close to Home |
| Close-In Weapon System | CIWS |
| Closer | Closer |
| Clostridium | Clostridium |
| Clostridium tetani | Clostridium tetani |
| Clotario I | Clotario I |
| Clotario II | Clotario II |
| Clotario III | Clotario III |
| Clotario IV | Clotario IV |
| Clotilde | Clotilde |
| Cloto | Cloto |
| Clotoide | Clotoide |
| Cloud City | Ciudad Nube |
| Cloud Strife | Cloud Strife |
| Clover | Clover |
| Clovis | Cultura Clovis |
| clown | clown |
| Clozapina | Clozapina |
| club | liga |
| Club alpino | Club Alpino |
| Club América | Club América |
| Club Athlétique Brive Corrèze | Club Athlétique Brive-Corrèze |
| Club Atlético Arsenal | Arsenal Fútbol Club |
| Club Atlético Banfield | Club Atlético Banfield |
| Club Atlético Bella Vista | Club Atlético Bella Vista |
| Club Atlético Boca Juniors | Club Atlético Boca Juniors |
| Club Atlético Ciudad de Lorquí | Club de Fútbol Ciudad de Murcia |
| Club Atlético Huracán | Club Atlético Huracán |
| Club Atlético Independiente | Club Atlético Independiente |
| Club Atlético Lanús | Club Atlético Lanús |
| Club Atlético Osasuna | Club Atlético Osasuna |
| Club Atlético Peñarol | Club Atlético Peñarol |
| Club Atlético Peñarol Mar del Plata | Club Atlético Peñarol |
| Club Atlético Platense | Club Atlético Platense |
| Club Atlético River Plate | Club Atlético River Plate |
| Club Atlético Rosario Central | Club Atlético Rosario Central |
| Club Atlético San Lorenzo de Almagro | Club Atlético San Lorenzo de Almagro |
| Club Atlético San Martín | Club Atlético San Martín |
| Club Atlético Tigre | Club Atlético Tigre |
| Club Atlético Vélez Sársfield | Club Atlético Vélez Sársfield |
| Club Baloncesto Málaga | Club Baloncesto Málaga |
| Club de Fútbol Universidad de Chile | Club de Fútbol Universidad de Chile |
| Club de Gimnasia y Esgrima La Plata | Club de Gimnasia y Esgrima La Plata |
| Club de Hockey Canadien | Montreal Canadiens |
| Club de Regatas Vasco da Gama | Club de Regatas Vasco da Gama |
| Club dei foglianti | Club des Feuillants |
| club del libro | club del libro |
