- M Missoni
- MAC Cosmetics
- MacKenzie Dow
- Macy*s
- Madewell
- Madison Furniture Barn
- Magic Nails
- Magic Photo
- Magnussen Home
- Maidenform
- Maitland-Smith
- Majestic Mirror
- Mall Jump
- Malley's Chocolates
- Mandarina Duck
- Manhattan
- Marbles: The Brain
- Marco Naples Vacation Rentals
- Mario & Marielena
- Mark Roberts
- Marks & Morgan Jewelers
- Marmi
- Marni
- Marshall James
- Marshalls
- Masland Carpet & Rugs
- Massage Envy
- Master Design
- MasterCuts
- Mattress Firm
- Mattress Hub
- Maurices
- Maximus Hobby Shop
- MaxMara
- MaxStudio.com
- Mayors
- MC Sports
- McKay Table Pads
- McKinley Leather
- Meadowcraft
- Med Lift
- Medifast Weight Control Center
- Men's Wearhouse and Tux
- Merle Norman Cosmetics Studios
- Merrell
- Metro PCS
- Mexicali Blues
- Mexx
- Mia & Maxx
- Michael Kors
- Michael Thomas
- Michaels
- Microsoft
- Mikhail Darafeev
- Miles Talbott
- Miracle Ear
- Miracle Eyebrows
- Miroa
- Mobel
- Moda
- Moda Xpress
- Modell's Sporting Goods
- Modern Nails
- Mohawk
- Moncler
- Montblanc
- Moochie & Co.
- Mori Luggage & Gifts
- Morning Glory
- Motherhood Maternity
- Motioncraft
- Movado
- Mulan
- Murray Feiss Lighting
- Music Depot
- Music Education Centers of America
- My Favorite Sports
- My Pillow
- Mystic Valley Traders