- Maaji
- Macbeth
- Madden Girl
- Magnum
- Marc by Marc Jacobs
- Marc Ecko
- Marc Jacobs
- Marc New York by Andrew Marc
- Margaritaville
- Mark & James by Badgley Mischka
- Marmot
- Matiko
- Matisse
- Matix Clothing Company
- Matt Bernson
- Mavi Jeans
- Max and Cleo
- Me Too
- Mel by Melissa
- Melissa Shoes
- Mephisto
- Merrell
- Mezlan
- MIA
- Michael Antonio
- Michael Kors
- MICHAEL Michael Kors
- Michael Stars
- Minnetonka
- Miraclebody Jeans
- Miraclesuit
- Miss Me
- Missoni
- Mizuno
- Modern Vintage
- Momentum by St. Moritz
- Montrail
- Moods of Norway
- Mootsies Tootsies
- Morgan&Milo Kids
- Moschino
- Motif 56
- Mountain Hardwear
- Mountrek
- Moving Comfort Apparel
- MPG Sport
- MUK LUKS
- Munro American
- 7 For All Mankind
- Adidas by Stella McCartney
- Alexander McQueen
- Aquatalia by Marvin K.
- Badgley Mischka
- Belle by Sigerson Morrison
- Bruno Magli
- Catherine Malandrino
- Christin Michaels
- Coconuts By Matisse
- DOLCE by Mojo Moxy
- Donna Morgan
- Dr. Martens
- Ella Moss
- Eric Michael
- Hugger Mugger
- Ivy & Blu Maggy Boutique
- Jessica McClintock
- Johnston & Murphy
- Kate Mack
- Le Mystere
- Naughty Monkey
- Neil M.
- Nicole Miller
- Nurse Mates
- Ocean Minded
- Pelle Moda
- Rebecca Minkoff
- Sesto Meucci
- Sigerson Morrison
- Stella McCartney
- Steve Madden
- Travis Mathew
- White Mountain
