| U.S. Rigging | usrigging.com | 2 offers | |
| UGA Ice Dawgs Hockey | ugahockey.com | 2 offers | |
| Ultrascope | ultrascopes.com | 1 offer | |
| Umpqua Oats | umpquaoats.com | 1 offer | |
| UnCanna | uncanna.com | 8 offers | |
| Uncharted Supply Company | unchartedsupplyco.com | 2 offers | |
| Uncle Sam's CBD | unclesamscbd.com | 2 offers | |
| Under the Weather | utwpods.com | 2 offers | |
| Undersummers by CarrieRae | undersummers.com | 6 offers | |
| Undersun Fitness | undersunfitness.com | 3 offers | |
| United Sewing Automation | unitedsewinginc.com | 11 offers | |
| United Sports Brands Canada | unitedsportsbrands.ca | 3 offers | |
| Universal Hollywood | universalstudioshollywood.com | 4 offers | |
| Universal Orlando | universalorlando.com | 4 offers | |
| UniversalUSA | universalusa.com | 1 offer | |
 |
Unreal Vapors | unreal-vapors.myshopify.com | 2 offers |
| UPSY | upsy.com | 6 offers | |
| URBAN ARMOR GEAR | urbanarmorgear.com | 4 offers | |
| Urban Import | urbanimport.com | 3 offers | |
| UrbanUndercover | urbanundercover.com | 3 offers | |
| US Cargo Control | uscargocontrol.com | 1 offer | |
| UVD | ultimatevapedeals.com | 1 offer |