| Cabanis (de) | Cabraz | Cabulo (de) | Cachat |
| Cagna | Caillet | Caillet-Bois | Cajeux |
| Caldart | Caloz | Calpini | Camanis (de)/Caman |
| Chamberlhac (de) | Camenzind | Campitelli | Canali (de) |
| Capelli | Cappi | Cardis | Carlen |
| Carli | Carpani | Carraud | Carraux |
| Carrier | Carron | Carroz | Carrupt |
| Carruzzo | Carthoblaz | Casal | Casanova |
| Casari | Casetti | Caseux | Cassaz |
| Castello (de) | Catalano | Catelani | Cathrein |
| Cavé | Cavelli | Ceppi | Cergneux |
| Cerise | Cerny | Cerutti | Cervent (de) |
| Cesi | Cettou | Chabbey | Chablais |
| Chablesy | Chablod | Chaffardon (de) | Chaignon (de) |
| Chalesy (de) | Challand | Challant (de) | Chalomel |
| Claivoz | Chambovey | Chamoson (de) | Chanton |
| Chapela | Chapelet | Chapellu | Chaperon |
| Chappaz | Chappelet | Chappex | Chappot |
| Chappuis | Chappuisod | Charbonnet | Chardon |
| Charles | Charléty | Charrex | Charrez |
| Charvet | Charvoz | Chasse | Chastonay (de) |
| Chatelet | Chátillon (de) | Chatriand | Chatriant |
| Chatron | Chattron | Cheffre | Cherix |
| Chervaz | Cheseaux | Chessex | Chevallay |
| Chevalley | Cheve | Chevez | Chevrier |
| Chevron-Vilette (de) | Chiarelli | Christen | Christi |
| Christinat | Ciana | Cina | Claivaz |
| Corthay | Clapasson | Claret | Clausen |
| Clavibus (de) | Clavien | Clavioz | Clément |
| Clemenz | Clemenzo | Clerc | Cleusix |
| Clivaz | Clivio | Clo | Clos |
| Closuit | Cocatrix (de) | Collet | Collombara |
| Collombey (de) | Collombin | Comazzi | Combis (de) |
| Comb | Comina | Cominaz | Command |
| Compey (de) | Conches (de) | Concily | Concina |
| Conforti | Constantin | Contard | Contat |
| Conthey (de) | Converset | Coppex | Coppey |
| Copt | Coquoz | Corbičres (de) | Cordel |
| Cordier | Cordonier | Cordy | Cornut |
| Corthey | Corvasce | Costa | Cotta noud |
| Cottentin | Cotter | Cottet | Cotture |
| Coudra | Coupy | Courten (de) | Courthion |
| Courtine | Courtion | Coutaz | Couturier |
| Craviolini | Crecentino | Crépin | Crettaz |
| Crettenand | Crettex | Crettol | Cretton |
| Cries (de) | Cristina | Crittin | Crolla |
| Cropt | Curd | Cursi | Cusani |
| Czech | Commun (du) |