| TCTroy Construction | Commerce | GA | — | ◇ UNVERIFIED |
| TGTroy Group, Inc., Wheeling | Wheeling | WV | — | ◇ UNVERIFIED |
| TFTrue Farma Holding INC Dba True Farma Manufacturing LLC | Paso Robles | CA | — | ◇ UNVERIFIED |
| TTruehq | Hillsboro | OR | — | ◇ UNVERIFIED |
| TITruetech INC | Riverhead | NY | — | ◇ UNVERIFIED |
| TVTrue Value Manufacturing CO | Chicago | IL | — | ◇ UNVERIFIED |
| TITsi Industries | Marshfield | MO | — | ◇ UNVERIFIED |
| TCTSM Coatings, Inc. | Cleveland | OH | — | ◇ UNVERIFIED |
| TCTucker Chemical LLC | Woods Cross | UT | — | ◇ UNVERIFIED |
| TCTuf-top Coating | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| T3Turbo 3d LLC Dba Fugo | Gardena | CA | — | ◇ UNVERIFIED |
| TGTurner Group, Inc | Marietta | GA | — | ◇ UNVERIFIED |
| TITurner Industries Group, LLC | Geismar | LA | — | ◇ UNVERIFIED |
| TPTurret Punch CO Inc/tpc INC | Fontana | CA | — | ◇ UNVERIFIED |
| TCTwentieth Century Forge | Hubbard | OR | — | ◇ UNVERIFIED |
| TITyche International Group INC | Pittstown | NJ | — | ◇ UNVERIFIED |
| TLTysol LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| TLTysol LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| TLTysol LLC | Woodbury | MN | — | ◇ UNVERIFIED |
| URUcar Resinas Caribe INC. | Bayamon | PR | — | ◇ UNVERIFIED |
 Ultimate Linings | Houston | TX | — | ◇ UNVERIFIED |
| UTUltimate Training Munitions INC | North Branch | NJ | — | ◇ UNVERIFIED |
| UAUltra Additives, LLC D/b/a Munzing North America, LP | Clover | SC | — | ◇ UNVERIFIED |
| UCUltra-poly Corporation | Berwick | PA | — | ◇ UNVERIFIED |
| UPUltra Poly CORP - Portland | Portland | PA | — | ◇ UNVERIFIED |
| UCUnelko Corporation | Scottsdale | AZ | — | ◇ UNVERIFIED |
| ULUnifi-kinston LLC | Kinston | NC | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP | Torrance | CA | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Holz Impoundment | Near South Charleston | WV | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation | Piscataway | NJ | — | ◇ UNVERIFIED |
| UCUnion Carbide Corporation - Ucar Emulsion Systems | Garland | TX | — | ◇ UNVERIFIED |
| UPUnipro Paint Mfg | Denver | CO | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | — | ◇ UNVERIFIED |
| UDUnique Dispensing Systems, LLC | Guilford | CT | — | ◇ UNVERIFIED |
| UCUnited Coatings Manufacturing CO | Green Acres | WA | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Lab/dunmore | Scranton | PA | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Laboratories | Jacksonville | IL | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Laboratories | Jackson | MS | — | ◇ UNVERIFIED |
| UGUnited Gilsonite Labs | Dunmore | PA | — | ◇ UNVERIFIED |
| UIUnited Industrial Services of Virginia | Rich Creek | VA | — | ◇ UNVERIFIED |
| UPUnited Property Services Dba Haul4me.com | Camarillo | CA | — | ◇ UNVERIFIED |
| UPUnited Property Services INC | Camarillo | CA | — | ◇ UNVERIFIED |
| URUnited Resins INC | Pittsgrove Township | NJ | — | ◇ UNVERIFIED |
| USUnited Salt Corporation | Missouri City | TX | — | ◇ UNVERIFIED |
| USUnited States Department of Energy Savannah River Site | Aiken | SC | — | ◇ UNVERIFIED |
| UUnivar | Martinsville | VA | — | ◇ UNVERIFIED |
| USUnivar Solutions Liquids Plant Legacy Magnablend | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions USA LLC | Fairfield | CA | — | ◇ UNVERIFIED |
| UUUnivar USA INC | Hobbs | NM | — | ◇ UNVERIFIED |
| UCUniversal Chemicals & Coatings INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
