- Calvin Klein
- Candino
- Carl F. Bucherer
- Cartier
- Carven
- Casio
- Catamaran
- Catena
- Catorex
- Cattin
- Century
- Cerruti 1881
- Certina
- Chaika
- Chanel
- Charriol
- Chopard
- CHRIST Juweliere und Uhrmacher
- Christian van der Klaauw
- Chronographe Swiss
- Chronoswiss
- Cimier
- Citizen
- Claude Bernard
- Clerc
- Concord
- Consul
- Continental
- Corum
- Cuervo y Sobrinos
- Cyma
- Cyril Ratel
