| UDUnited Duralume Products, INC. | Anaheim | CA | — | ◇ UNVERIFIED |
| UFUnited Fabrication | Salt Lake City | UT | — | ◇ UNVERIFIED |
| UGUnited Global Industries, Inc. | La Grange | IL | — | ◇ UNVERIFIED |
| UIUnited Industries, INC. | Odessa | TX | — | ◇ UNVERIFIED |
| UIUnited Ink Enterprises LTD | Belleville | IL | — | ◇ UNVERIFIED |
| ULUnited Lifttrucks | Huntington Park | CA | — | ◇ UNVERIFIED |
| UMUnited Machine Works | Houston | TX | — | ◇ UNVERIFIED |
| UMUnited Machining, Inc | Sutton | MA | — | ◇ UNVERIFIED |
| UMUnited Machining, INC. | Englewood | CO | — | ◇ UNVERIFIED |
| UMUnited Mechanical & Metal Fabricators, Inc. | Union City | CA | — | ◇ UNVERIFIED |
| UMUnited Metal Fabrication INC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| UMUnited Metals Construction | Philadelphia | PA | — | ◇ UNVERIFIED |
| UMUnited Metal Services | Houston | TX | — | ◇ UNVERIFIED |
| UMUnited Milwaukee Scrap LLC | Burnsville | MN | — | ◇ UNVERIFIED |
| UMUnited Milwaukee Scrap of Minnesota | Burnsville | MN | — | ◇ UNVERIFIED |
| UPUnited Performance Metals | La Mirada | CA | — | ◇ UNVERIFIED |
| UPUnited Personnel Services, INC. | Whately | MA | — | ◇ UNVERIFIED |
 United Plastic Fabricating, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| URUnited Rentals | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| USUnited Science Industries | Dix | IL | — | ◇ UNVERIFIED |
| USUnited Science Industries INC | Okawville | IL | — | ◇ UNVERIFIED |
| USUnited Services INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| USUnited Sheet Metal Works and Steel Fabricators, INC. | Plant City | FL | — | ◇ UNVERIFIED |
| USUnited Sign Corporation of Allouez, INC. | De Pere | WI | — | ◇ UNVERIFIED |
| USUnited Signs Company, Incorporated | Laurel | MD | — | ◇ UNVERIFIED |
| USUnited Signs & Signals, INC. | Asheboro | NC | — | ◇ UNVERIFIED |
| USUnited Solutions | Sardis | MS | — | ◇ UNVERIFIED |
| USUnited States Marble | Remus | MI | — | ◇ UNVERIFIED |
| USUnited Steel Ventures INC Dba United Precision Mac | Edina | MN | — | ◇ UNVERIFIED |
| USUnited Steel Works Inc | Moody | AL | — | ◇ UNVERIFIED |
| USUnited Structure Solution, Inc. | College Point | NY | — | ◇ UNVERIFIED |
| USUnited Sugars Producers & Refiners Cooperative-chicago | Chicago | IL | — | ◇ UNVERIFIED |
| USUnited Support Solutions INC. | Totowa | NJ | — | ◇ UNVERIFIED |
| UTUnited Team Mechanical, LLC | Kaysville | UT | — | ◇ UNVERIFIED |
| UTUnited Technologies Automotive Sys INC | Union City | IN | — | ◇ UNVERIFIED |
| UTUnited Technologies Corporation | Union | WV | — | ◇ UNVERIFIED |
| UTUnited Technologies Corporation | Union | WV | — | ◇ UNVERIFIED |
| UTUnited Tooler of Illinois | Loves Park | IL | — | ◇ UNVERIFIED |
| UWUnited Weld Services, LLC | York | PA | — | ◇ UNVERIFIED |
| UWUnited Wire Craft, INC. | Des Plaines | IL | — | ◇ UNVERIFIED |
| UPUnit Parts CO | Oklahoma City | OK | — | ◇ UNVERIFIED |
| U5Unity 5 INC | Deerfield | IL | — | ◇ UNVERIFIED |
| UPUnity Plastics | North Little Rock | AR | — | ◇ UNVERIFIED |
| UTUnity Tool INC Dba Unity Precision Manufacturing | Maple Grove | MN | — | ◇ UNVERIFIED |
| UFUnivacco Foils Corporation | Cerritos | CA | — | ◇ UNVERIFIED |
| USUnivar Solutions USA INC. | Providence | RI | — | ◇ UNVERIFIED |
| USUnivar Solutions USA INC. | Carteret | NJ | — | ◇ UNVERIFIED |
| UCUniversal Carbide | Santa Cruz | CA | — | ◇ UNVERIFIED |
| UCUniversal Compression INC | Tulsa | OK | — | ◇ UNVERIFIED |
| UDUniversal Dust Collector Mfg & Supply CORP Dba Udc Corporation | Anaheim | CA | — | ◇ UNVERIFIED |
| UFUniversal Fabricating and Construction Services | Groveport | OH | — | ◇ UNVERIFIED |
| UFUniversal Fabricators INC | Madison Heights | MI | — | ◇ UNVERIFIED |
| UFUniversal Fabricators, LLC | Bay City | TX | — | ◇ UNVERIFIED |
| UFUniversal Fireproof Door Co., Inc. | Brentwood | NY | — | ◇ UNVERIFIED |
| UFUniversal Formations INC | Burnsville | MN | — | ◇ UNVERIFIED |
| UGUniversal Gates & Hardware INC | Midvale | UT | — | ◇ UNVERIFIED |
| UHUniversal Head CO INC | Joliet | IL | — | ◇ UNVERIFIED |
| UIUniversal Industries INC | Manor | TX | — | ◇ UNVERIFIED |
| UIUniversal Industries LLC | Tomahawk | WI | — | ◇ UNVERIFIED |
| UMUniversal Machine Shop | Huntington Beach | CA | — | ◇ UNVERIFIED |
| UMUniversal Machine Shop LLC | Mayfield | KY | — | ◇ UNVERIFIED |
| UMUniversal Manufacturing & Design, LLC | Greer | SC | — | ◇ UNVERIFIED |
| UMUniversal Marine & Industrial Services | Mobile | AL | — | ◇ UNVERIFIED |
| UMUniversal Molding Extrusion CO | Downey | CA | — | ◇ UNVERIFIED |
| UPUniversal Protective Packaging, INC. | Mechanicsburg | PA | — | ◇ UNVERIFIED |
| URUniversal Rubber Products, INC. | Denver | NC | — | ◇ UNVERIFIED |
| USUniversal Sawmill | Bungay | IL | — | ◇ UNVERIFIED |
| USUniversal Sheetmetal INC | Woodinville | WA | — | ◇ UNVERIFIED |
| USUniversal Sign Co., LLC | Lafayette | LA | — | ◇ UNVERIFIED |
| USUniversal Sign & Lighting LLC | Fairbanks | AK | — | ◇ UNVERIFIED |
| USUniversal Signs | Hasbrouck Heights | NJ | — | ◇ UNVERIFIED |
| USUniversal Signs CORP. | Hampton Bays | NY | — | ◇ UNVERIFIED |
| USUniversal Signs INC | Woodbury | MN | — | ◇ UNVERIFIED |
| USUniversal Stainless INC | Clear Lake | MN | — | ◇ UNVERIFIED |
| USUniversal Steel Services, INC. | San Bernardino | CA | — | ◇ UNVERIFIED |
| USUniversal Synergetics INC | Marlton | NJ | — | ◇ UNVERIFIED |
| USUniversal Synergetics INC | Marlton | NJ | — | ◇ UNVERIFIED |
| UTUniversal Tool Inc. | Troy | MI | — | ◇ UNVERIFIED |
| UTUniversal Tool, INC. | Rainbow City | AL | — | ◇ UNVERIFIED |
| UTUniversal Truck Equipments LLC | Medley | FL | — | ◇ UNVERIFIED |
| UWUniversal Welding & Fabrication INC. | North Pole | AK | — | ◇ UNVERIFIED |
| UFUniversity Frames INC | Anaheim | CA | — | ◇ UNVERIFIED |
| UPUniversity Park Golo | University Park | IL | — | ◇ UNVERIFIED |
| USUniversity Service | Decatur | IL | — | ◇ UNVERIFIED |
| UIUni-Vue, Inc. | Troy | MI | — | ◇ UNVERIFIED |
| UVUni Vue INC | Ferndale | MI | — | ◇ UNVERIFIED |
| UMUniwall Mfg. CO. (1576111601) | Louisville | OH | — | ◇ UNVERIFIED |
| UCUnknown Contractor | Forsyth | IL | — | ◇ UNVERIFIED |
| UIUnlimited Image INC | Burnsville | MN | — | ◇ UNVERIFIED |
| UIUnlimited Industrial Services, LLC | Belle Glade | FL | — | ◇ UNVERIFIED |
| UMUpchurch Machine Co., INC. | Charlotte | NC | — | ◇ UNVERIFIED |
| USUpcycle Solutions, Inc. | Londonderry | NH | — | ◇ UNVERIFIED |
| UFUp Fabricating CO INC | Manistique | MI | — | ◇ UNVERIFIED |
| UNUp North Industries LLC | Petoskey | MI | — | ◇ UNVERIFIED |
| UEUpper Edge Solutions, LLC | Holland | NY | — | ◇ UNVERIFIED |
| URUpper Rock Energy Partners LLC - Upper Rock Island County Landfill | East Moline | IL | — | ◇ UNVERIFIED |
| UUps | Urbana | IL | — | ◇ UNVERIFIED |
| UPUpstate Permits LLC | Mauldin | SC | — | ◇ UNVERIFIED |
| USUpton Sheet Metal, Inc. | Anaheim | CA | — | ◇ UNVERIFIED |
| UIUpturn Industries, INC. | Bainbridge | NY | — | ◇ UNVERIFIED |
