| Cadarcet |
| Calzan |
| Camarade |
| Camon |
| Campagne-sur-Arize |
| Canté |
| Capoulet-et-Junac |
| Carcanières |
| Carla-Bayle |
| Carla-de-Roquefort |
| Castelnau-Durban |
| Castex |
| Castillon-en-Couserans |
| Castéras |
| Caumont |
| Caussou |
| Caychax |
| Cazals-des-Baylès |
| Cazaux |
| Cazavet |
| Cazenave-Serres-et-Allens |
| Celles |
| Cescau |
| Château-Verdun |
| Clermont |
| Contrazy |
| Cos |
| Couflens |
| Coussa |
| Coutens |
| Crampagna |
| Cérizols |
