Stores
- U Store It
- U.S. Toy Company
- uBid.com
- Udder Covers
- UFC Store
- UGODOG
- Ulla Popken
- Ultimate Outlet
- Ultra Fragrances
- UMI Children's Shoes
- Uncle Sam's Outfitters
- Uncorked.com
- Under Armour Canada
- Undercovertourist.com
- Underground Station
- UNEEDIT.com
- Uniform City
- UnionBay
- Unique Vintage
- UniqueSquared.com
- Universal Sports
- Unlimited Cellular
- Uno Chicago
- Unseen On TV
- Up & Riding
- Upromise
- Urban Scooters
- Urbanity
- URBANOG
- US Medical Supplies
- US Search.com Affiliate Program
- usa4ink.com
- Used Golf Ball Deals
- USFlagStore.com
- Utrecht Art Supplies
- UXcell Online Factory Shopping
- U.S. Cavalry
- UberPrints
- UBuildApp
- Udreamy Bridal
- UGG Australia
- UK2 Group
- ULTA Beauty
- UltimateBackStore.com
- UltraDiamonds
- UMIDirect
- Uncommon
- Under Armour
- UndercoverCondoms.com
- Undergear
- UndergroundHipHop.com
- Unemployed Philosophers Guild
- Union Diamond
- Unique Photo
- UniquePearl.com
- United Domains
- universalgear.com
- Uno Alla Volta
- UNORTH
- UNTUCKit
- UPrinting.com
- Urban Outfitters
- UrbanBoundaries
- UrbanMinx.com
- US Jewelry Factory
- US Pets
- USA TODAY
- USAFlorist.com
- uSell
- USOUTDOOR.com
- Utrecht Art.com
