M
- M& J Trimming
- Mabel's Labels
- Macy's
- Magix
- Master Gardening
- Match.ca
- Mate1
- McAfee
- MEGA Brands
- MegaTHIK
- Melrose Jewelers
- Mexicana Airlines
- MEZZI
- MGM Grand Las Vegas
- MicroNutra
- Microsoft AdCenter
- Microsoft Store
- Military Book Club
- Mint Canada
- Mix Direct
- Money Mart
- Mortgage Protection Plan
- Murad
- MusiciansFriend.com
- MusicSkins
- My-Song.ca
- MyFax.com
- Mystery Guild