| Close Encounters of the Third Kind | Close Encounters of the Third Kind |
| Close to Home | Close to Home |
| Closeau | Clouseau |
| Closer | Closer |
| Clostridium | Clostridium |
| Clostridium tetani | Clostridium tetani |
| Clotario I | Chlotarius I |
| Clotario II | Chlotharius II |
| Clotario III | Chlotharius III |
| Clotario IV | Chlotharius IV |
| Clotilde de Francia | Clothilde van Frankrijk |
| Cloto | Clotho |
| Clotoide | Clothoïde |
| Cloud Strife | Cloud Strife |
| Cloudcroft | Cloudcroft |
| clown | clown |
| Clozapina | Clozapine |
| club | bond |
| Club América | Club América |
| Club Atlètic Terrassa | Atlètic Terrassa |
| Club Atlético Banfield | CA Banfield |
| Club Atlético Belgrano | Club Atlético Belgrano de Córdoba |
| Club Atlético Bella Vista | Club Atlético Bella Vista |
| Club Atlético Boca Juniors | Boca Juniors |
| Club Atlético Bucaramanga Corporación Deportiva | Atlético Bucaramanga |
| Club Atlético de Madrid | Atlético Madrid |
| Club Atlético de Madrid B | Atlético Madrid B |
| Club Atlético de Pinto | Atlético de Pinto |
| Club Atlético Gimnasia y Esgrima | Gimnasia y Esgrima de Jujuy |
| Club Atlético Independiente | Independiente |
| Club Atlético Lanús | CA Lanús |
| Club Atlético Nueva Chicago | Club Atlético Nueva Chicago |
| Club Atlético Osasuna | CA Osasuna |
| Club Atlético Peñarol | Peñarol |
| Club Atlético Progreso | CA Progreso |
| Club Atlético River Plate | River Plate |
| Club Atlético Rosario Central | Rosario Central |
| Club Atlético San Lorenzo de Almagro | CA San Lorenzo de Almagro |
| Club Atlético Vélez Sársfield | CA Vélez Sársfield |
| Club automovilístico real | Koninklijke Automobilisten Bond |
| Club Blooming | Club Blooming |
| Club Bolívar | Club Bolívar |
