| URUnited Rentals | San Jose | CA | — | ◇ UNVERIFIED |
| USUnited Scientific INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| USUnited Services INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| USUnited Sheet Metal Works and Steel Fabricators, INC. | Plant City | FL | — | ◇ UNVERIFIED |
| USUnited Silk Screeners INC | Cedar Grove Township | NJ | — | ◇ UNVERIFIED |
| USUnited Solar Ovonic | Auburn Hills | MI | — | ◇ UNVERIFIED |
| USUnited Solutions | Sardis | MS | — | ◇ UNVERIFIED |
| USUnited Spring & Mfg. Co. | Chicago | IL | — | ◇ UNVERIFIED |
| USUnited States Associates, LLC | Providence | RI | — | ◇ UNVERIFIED |
| USUnited States Marble | Remus | MI | — | ◇ UNVERIFIED |
| USUnited States Mint at San Francisco | San Francisco | CA | — | ◇ 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 Support Solutions INC. | Totowa | NJ | — | ◇ UNVERIFIED |
| UTUnited Team Mechanical, LLC | Kaysville | UT | — | ◇ UNVERIFIED |
| UTUnited Technologies Automotive Sys INC | Union City | IN | — | ◇ UNVERIFIED |
| UTUnited Tooler of Illinois | Loves Park | IL | — | ◇ UNVERIFIED |
| UTUnited Tool & Mold INC | Duncan | SC | — | ◇ UNVERIFIED |
| UWUnited Weld Services, LLC | York | PA | — | ◇ UNVERIFIED |
| UFUnity Fabric INC. Dba Yc Textile | Los Angeles | CA | — | ◇ 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 |
| UUniversal | Cloverdale | VA | — | ◇ UNVERIFIED |
| UAUniversal Auto Repairs Services LLC | Sacramento | CA | — | ◇ UNVERIFIED |
| UCUniversal Carbide | Santa Cruz | CA | — | ◇ UNVERIFIED |
| UCUniversal Cargo Doors & Service, INC. | Miami | FL | — | ◇ UNVERIFIED |
| UCUniversal Cargo Doors & Service, INC. | Miami | FL | — | ◇ UNVERIFIED |
| UCUniversal Compression INC | Tulsa | OK | — | ◇ UNVERIFIED |
| UCUniversal Core INC Dba As Rpm Rebuilders | Rialto | CA | — | ◇ UNVERIFIED |
| UCUniversal Cyclops Specialty Steel Div | Titusville | PA | — | ◇ UNVERIFIED |
| UDUniversal / Devlieg Inc. | Saginaw | MI | — | ◇ 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 Fixture CORP | Brooklyn | NY | — | ◇ UNVERIFIED |
| UFUniversal Formations INC | Burnsville | MN | — | ◇ UNVERIFIED |
| UGUniversal Gates & Hardware INC | Midvale | UT | — | ◇ UNVERIFIED |
| UHUniversal Head CO INC | Joliet | IL | — | ◇ UNVERIFIED |
| UHUniversal Hydrogen | Hawthorne | CA | — | ◇ 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 |
