| TLTyler Livvix Dba Custom Films, INC. | Marshall | IL | — | ◇ UNVERIFIED |
| TLTysol LLC | Woodbury | MN | — | ◇ UNVERIFIED |
| TLTysol LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| TLTysol LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| UDUfo Design | Huntington Beach | CA | — | ◇ UNVERIFIED |
| UWUltimate Window INC. | Lawrence | MA | — | ◇ UNVERIFIED |
| UAUltra Additives, LLC D/b/a Munzing North America, LP | Clover | SC | — | ◇ UNVERIFIED |
| UGUltra Glas of Lakeville Incorporated | Lakeville | IN | — | ◇ UNVERIFIED |
| UAUltrapro Air Tite Ma | North Adams | MA | — | ◇ UNVERIFIED |
| UIUndercover INC - Rogersville | Rogersville | MO | — | ◇ UNVERIFIED |
| UCUnelko Corporation | Scottsdale | AZ | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP | Torrance | CA | — | ◇ UNVERIFIED |
| UCUnion Carbide CORP Holz Impoundment | Near South Charleston | WV | — | ◇ UNVERIFIED |
| UPUnion Products INC | Leominster | MA | — | ◇ UNVERIFIED |
| UPUnique Plastic Designs Group LLC | Odessa | FL | — | ◇ UNVERIFIED |
| UPUnistar Plastics LLC | Harahan | LA | — | ◇ UNVERIFIED |
| UCUnited Comb & Novelty Corporation | Gilbert | AZ | — | ◇ UNVERIFIED |
 United Plastic Fabricating, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| USUnited Salt Corporation | Missouri City | TX | — | ◇ UNVERIFIED |
| USUnited Solutions | Sardis | MS | — | ◇ UNVERIFIED |
| USUnited States Department of Energy Savannah River Site | Aiken | SC | — | ◇ UNVERIFIED |
| USUnited States Marble | Remus | MI | — | ◇ UNVERIFIED |
| UTUnited Technologies Automotive Sys INC | Union City | IN | — | ◇ UNVERIFIED |
| UPUnity Plastics | North Little Rock | AR | — | ◇ UNVERIFIED |
| USUnivar Solutions Liquids Plant Legacy Magnablend | Waxahachie | TX | — | ◇ UNVERIFIED |
| USUnivar Solutions USA INC. | Providence | RI | — | ◇ UNVERIFIED |
| USUnivar Solutions USA LLC | Fairfield | CA | — | ◇ UNVERIFIED |
| UUUnivar USA INC | Hobbs | NM | — | ◇ UNVERIFIED |
| UGUniversal Gates & Hardware INC | Midvale | UT | — | ◇ UNVERIFIED |
| UIUniversal Industries INC | Manor | TX | — | ◇ UNVERIFIED |
| UPUniversal Polymer Corporation | Chino | CA | — | ◇ UNVERIFIED |
| UPUniversal Protective Packaging, INC. | Mechanicsburg | PA | — | ◇ UNVERIFIED |
| USUniversal Synergetics INC | Marlton | NJ | — | ◇ UNVERIFIED |
| USUniversal Synergetics INC | Marlton | NJ | — | ◇ UNVERIFIED |
| UIUni-Vue, Inc. | Troy | MI | — | ◇ UNVERIFIED |
| UMUniwall Mfg. CO. (1576111601) | Louisville | OH | — | ◇ UNVERIFIED |
| UHUnlimited Horizons, L.l.c. | Matthews | NC | — | ◇ UNVERIFIED |
| UUnocal | Wilmington | CA | — | ◇ UNVERIFIED |
| UNUp North Industries LLC | Petoskey | MI | — | ◇ UNVERIFIED |
 Urban Electric Power INC | Pearl River | NY | — | ◇ UNVERIFIED |
| URU Recycle LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| UMUSA Mold INC. | Newton | IA | — | ◇ UNVERIFIED |
| UPUSA Packaging LLC | Round Rock | TX | — | ◇ UNVERIFIED |
| UAU.s. Army - Pine Bluff Arsenal | White Hall | AR | — | ◇ UNVERIFIED |
| UBUS Banknote CORP | Philadelphia | PA | — | ◇ UNVERIFIED |
| USU S Cast, Inc. | Elmer | NJ | — | ◇ UNVERIFIED |
| UUUsda Usfs R05 Air Attack Base | Chico | CA | — | ◇ UNVERIFIED |
| UDUS Doi Blm Pocatello Air Tanker Base | Pocatello | ID | — | ◇ UNVERIFIED |
| UDUS Doi Blm Twin Falls Air Tanker Base | Twin Falls | ID | — | ◇ UNVERIFIED |
| UOUsdol Osha | Dalton | GA | — | ◇ UNVERIFIED |
