| U.S. Security Associates, Inc. (@North Shore Long Island Jewish Hospital sites) NY | - | 0 | - | - |
| U.S. Silver - Idaho, INC. ID | Mining & Extraction | 1 | $117,728 | - |
| U.S. Silver and Gold ID | - | 0 | - | - |
| U.S. Soccer Federation, Inc. GA | Other Services | 2 | $175,000 | - |
| U.S. Software & Consulting, Inc. VA | Professional & Technical Services | 2 | $120,000 | - |
| U.S. Space & Rocket Center AL | Arts & Entertainment | 0 | - | C |
| U.S. Steel Corporation MI | - | 0 | - | - |
| U.S. Steel Tubular Products AL | - | 0 | - | - |
| U.S. Steel Tubular Products McKeesport Tubular Operations PA | - | 0 | - | - |
| U.S. Steel Tubular Products, Inc. McKeesport Tubular Operations PA | - | 0 | - | - |
| U.S. Strapping Company, Inc. SC | Manufacturing | 0 | - | F |
| U.S. Tent Rental, LLC FL | Real Estate | 1 | $95,202 | - |
| U.S. Tsubaki Automotive, LLC MA | Manufacturing | 0 | - | F |
| U.S. Well Services PA | - | 0 | - | - |
| U.S. Well Services TX | - | 0 | - | - |
| U.S. Well Services - Pleasanton TX | - | 0 | - | - |
| U.S. Xpress, Inc IN | - | 0 | - | - |
| U.S. Xpress, Inc. TN | Transportation & Warehousing | 2 | $89,300 | - |
| U.S.A Healthcare AL | Healthcare & Social Assistance | 0 | - | - |
| U.S.A. Medical Svcs. Corp. & Bupa Worldwide Co. FL | - | 0 | - | - |
| U3fit, INC. CA | Educational Services | 1 | $97,594 | - |
| UAB Callahan Eye Hospital AL | Healthcare & Social Assistance | 0 | - | B |
| UACJ Automotive Whitehall Industries INC AZ | - | 0 | - | - |
| UACJ Automotive Whitehall Industries Inc. MI | Manufacturing | 0 | - | F |
| UAG Capitol, Inc. dba Capitol Honda CA | - | 0 | - | - |
| UAG Cerritos I, LLC dba Penske Chevrolet of Cerritos CA | - | 0 | - | - |
| UAG Stevens Creek II, Inc. DBA Audi Stevens Creek CA | - | 0 | - | - |
| Uag Ventures Ac, L.P. TX | Real Estate | 0 | - | F |
| UAH Technologies LLC TX | Professional & Technical Services | 1 | $94,000 | - |
| UAP Company NY | Manufacturing | 0 | - | F |
| UAP Production LLC NY | Manufacturing | 1 | $76,960 | - |
| UAW-Chrysler National Training Center IN | - | 0 | - | - |
| UAW-Chrysler National Training Center MI | - | 0 | - | - |
| UB Family Medicine, Inc. NY | Healthcare & Social Assistance | 1 | $220,000 | - |
| UB Technology Innovations, Inc CA | Professional & Technical Services | 2 | $134,997 | - |
| Ubagit Corp. AL | Retail Trade | 0 | - | D |
| UBC Technology Services, Inc. SC | Professional & Technical Services | 1 | $166,400 | - |
| Uber AZ | - | 0 | - | - |
| Uber Freight US LLC TX | Transportation & Warehousing | 39 | $188,239 | - |
| Uber Technologies AZ | Professional & Technical Services | 0 | - | A |
| Uber Technologies NY | Professional & Technical Services | 0 | - | A |
| Uber Technologies, Inc. CA | Professional & Technical Services | 378 | $193,074 | A |
| Uber Technologies, Inc. (JUMP venture aka Social Bicycles, LLC) NY | - | 0 | - | - |
| UberTejas LLC TX | Professional & Technical Services | 3 | $119,667 | - |
| Ubiquiti, Inc. MI | Professional & Technical Services | 1 | $111,000 | - |
| Ubiros Inc. MA | Professional & Technical Services | 1 | $89,419 | - |
| Ubisoft CA | - | 0 | - | - |
| ubrZati, Inc. FL | Educational Services | 1 | $47,757 | - |
| UBS NJ | - | 0 | - | - |
| Ubs AG TN | Finance & Insurance | 3 | $275,000 | - |