C
- (Mendrisio District) Campaccio
- (Mendrisio District) Cantine al Bosco
- (Mendrisio District) Caviano
- (Mendrisio District) Campora
- (Mendrisio District) Civasca
- (Mendrisio District) Colorina
- (Mendrisio District) Ca dei Ladri
- (Mendrisio District) Ca Nova
- (Leventina District) Campello
- (Lugano District) Curtina
- (Leventina District) Croce
- (Blenio District) Crich
- (Locarno District) Crana
- (Vallemaggia District) Corte Grande
- (Vallemaggia District) Corte Grande
- (Vallemaggia District) Corte
- (Locarno District) Cortascio
- (Locarno District) Corcapolo
- (Locarno District) Contra
- (Blenio District) Comprovasco
- (Locarno District) Comologno
- (Vallemaggia District) Cimalmotto
- (Blenio District) Chiavasco
- (Blenio District) Castro
- (Bellinzona District) Castione
- (Lugano District) Castagnola
- (Blenio District) Cassina
- (Bellinzona District) Carmena
- (Blenio District) Campo Blenio
- (Vallemaggia District) Campo