U
- Ultimate Ears
- Under Armour
- Udacity
- Udemy
- UGA Bookstore
- UTA Bookstore
- University of Cincinnati Bookstore
- University of Nebraska Lincoln Bookstore
- Urban Decay
- United Colors Of Benetton
- Urban Excess
- Urban Industry
- Uber Kids
- Urban Outfitters
- Ubereats
- Urban Planet
- Urbanears
- Urbanista
- US Elite
- UGG
- Ugly Christmas Sweater
- US Go Buy
- UK ECIG STORE
- UK Soccer Shop
- US Wellness Meats
- UK Sport Imports
- UK Tights
- USC
- UK Tool Centre
- UTSA Bookstore
- Ulla Popken
- Ulrich's Bookstore
- Ultimate Outdoors
- Ultra Football
- UND Bookstore
- Universal Textiles
- Uniform City
- Unineed
- University of Florida Bookstore
- University of Miami Bookstore