Firmenkatalog
- C&A, Amriswil
- C&A, Weinfelden
- C&A Kids Store, Kreuzlingen
- CDS Bausoftware, Heerbrugg
- CHRIST Uhren & Schmuck, Kreuzlingen
- Café Grande Truffe, Bäckerei Mohn AG, Weinfelden
- Café Truffe, Bäckerei Mohn AG, Sulgen
- Calida, Romanshorn
- Car Point, Romanshorn
- CarolaC Bonifacio, Romanshorn
- Carrosserie Peter Meier, Altnau
- Carrosserie Romegioli, Sitterdorf
- Carrosserie Romegioli, Sitterdorf
- Cars and bikes STZ AG, Oberaach
- Casaton AG, Berg
- Cecil IL- Trading AG, Amriswil
- Central Apotheke Amriswil, Amriswil
- Central Garage, Romanshorn
- Centralgarage AG Amriswil, Amriswil
- Charles Vögele Mode AG, Amriswil
- Charles Vögele Mode AG, Weinfelden
- Chicorée Mode AG, Gossau
- Chicorée Mode AG, Weinfelden
- Chicorée Mode AG, Weinfelden
- Chicorée Mode AG, Wil
- Chinderlade Pepino, Oberbüren
- Coiffure Lilo, Güttingen
- Comarch, Arbon
- Confiserie-Tea Room City, Kreuzlingen
- Coop, Diepoldsau
- Coop, Lüchingen
- Coop, Heerbrugg
- Coop, Heiden
- Coop, Heerbrugg
- Coop, Amriswil
- Coop Supermarkt Oberriet, Oberriet
- Cromatech AG, Gossau
- computerfritz.ch GmbH, Bischofszell