C
- C28
- Cabela's
- Caesars Palace Las Vegas
- CalendarClub.ca
- Calling Cards
- Callture
- Canada Pharmacy
- CanadaVet
- Canadian Cartel
- Canadian Hickory Farms
- Canadian Tire
- Captain Cooks
- Carcostcanada
- CarRentals.com
- CB2 Canada
- Chapters.ca
- Charlie & Lee
- CheapOair
- Children's Place
- Cirrus Tech. Ltd.
- CitiFinancial
- Citifinancial.ca
- ClearlyContacts.ca
- Clix Wear
- Club Med
- Club Monaco
- Club Penguin
- Coffees Of Hawaii.com
- CoGen AntiVirus and Personal Firewall
- Collectablesdirect.ca
- CollegeFinder
- Copernic Inc.
- Corel Store Canada
- Crafters Choice Book Club
- Create and Barrel Canada
- Creative Labs
- Crocs
- Culinary Kit
- Cyberlink Canada
- Cymax Stores
- Czech Airlines