- Underoos
- Underwear Buddy
- Unzipped Citizen
- Unltdoffers
- Unoaerre
- Undefined.
- US Jewels and Gems
- Ultrasonic Cleaners
- Uptown American
- Ultrachic Fashion
- Unekform
- Union of Angels
- Ungalli Clothing
- Uni-T
- Unicorn Muscle
- Urban Smalls
- Unique Baby Shop
- Uptown Dog T-Shirts
- Unbelts
- University of Rockwell
- Uwood
- Unicorn Eye Wear
- Urban Steven
- Underwear Options
- Uplift Custom Bras
- Urban Baby Apparel
- Uri Minkoff
- Ultra Body Shaper
- USA Network Store
- Upper Downs
- Ugly Sweaters
- Ugly Christmas Sweater Shop
- Ugly Christmas Sweater Party
- Ugly Christmas Sweatshirts
- Urge Footwear
- Unstitched Utilities
- Upfootgear
- Uptown Yardie
- Uxibal
- USGator
- Untold Rebel
- Urban Scholar Gear
- Utilikilts
- Under Moments
- UnLabeled
- Upstage Style
- U.P. Supply
- USMC10
- UrbanMob
- Urbanite Fashion Boutique
- Urban Peach Boutique
- UnderOath BJJ
- UC Fitness Apparel
- Urban Panda
- Union & Fifth
- Uniikii
- US Sheepskin
- UnitedFront
- Upper Class Style
- Under the Influence of Happiness Lifestyle Apparel
- Unhly Supply Things
- Udtfashion
- Unity States
- United Apparel Liquidators
- UltraClub
- Urbancrews
- U.S. Military Hats
- Uvenux
- Uglies
- U Go Trendy
- UniQ Jewelry
- Uniklook
- Uberkate
- Uptown Steel
- United Bracelets
- Unicorn Universe
- Uplifties
- Ursa Minor
- Un.Affected
- Uniforme