| UCUnited Comb & Novelty Corporation | Gilbert | AZ | — | ◇ UNVERIFIED |
| UEUnited Engravers INC | Schaumburg | IL | — | ◇ UNVERIFIED |
 United Envelope, LLC | Mount Pocono | PA | — | ◇ UNVERIFIED |
| UFUnited Food Ingredients, Inc. | Willowbrook | IL | — | ◇ UNVERIFIED |
| UIUnited Ink Enterprises LTD | Belleville | IL | — | ◇ UNVERIFIED |
 United Plastic Fabricating, INC. | Ocala | FL | — | ◇ UNVERIFIED |
 United Plating Incorporated | Huntsville | AL | — | ◇ 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 Can Company | Chesterton | IN | — | ◇ 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 USA INC. | Providence | RI | — | ◇ UNVERIFIED |
| UCUniversal Coating INC | Mount Morris | MI | — | ◇ UNVERIFIED |
| UCUniversal Coatings INC | Steger | IL | — | ◇ UNVERIFIED |
| UGUniversal Galvanizing | Wright City | MO | — | ◇ UNVERIFIED |
| UGUniversal Galvinizing INC | Saint Peters | MO | — | ◇ UNVERIFIED |
| UGUniversal Gates & Hardware INC | Midvale | UT | — | ◇ UNVERIFIED |
| UIUniversal Industrial Finishing | Milpitas | CA | — | ◇ UNVERIFIED |
| UIUniversal Industrial Finishing | Fremont | CA | — | ◇ UNVERIFIED |
| UIUniversal Industries INC | Manor | TX | — | ◇ UNVERIFIED |
| UPUniversal Powder Coating | Belmont | CA | — | ◇ UNVERIFIED |
| UPUniversal Powder Coatings | Ward | AR | — | ◇ UNVERIFIED |
| UPUniversal Protective Packaging, INC. | Mechanicsburg | PA | — | ◇ UNVERIFIED |
| USUniversal Sandblasting & Painting INC. | Lanark | WV | — | ◇ 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 Synergetics INC | Marlton | NJ | — | ◇ UNVERIFIED |
| USUniversal Synergetics INC | Marlton | NJ | — | ◇ UNVERIFIED |
| UIUni-Vue, Inc. | Troy | MI | — | ◇ UNVERIFIED |
| UMUniwall Mfg. CO. (1576111601) | Louisville | OH | — | ◇ UNVERIFIED |
| UCUnknown Contractor | Forsyth | IL | — | ◇ UNVERIFIED |
| UIUpf INC. | Flint | MI | — | ◇ UNVERIFIED |
| UNUp North Industries LLC | Petoskey | MI | — | ◇ UNVERIFIED |
| UPUpstate Permits LLC | Mauldin | SC | — | ◇ UNVERIFIED |
| URU Recycle LLC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| UMUSA Mold INC. | Newton | IA | — | ◇ UNVERIFIED |
| UPUSA Packaging LLC | Round Rock | TX | — | ◇ UNVERIFIED |
| USU S Cast, Inc. | Elmer | NJ | — | ◇ UNVERIFIED |
| UDUS Design & Execute LLC | North Little Rock | AR | — | ◇ UNVERIFIED |
| UOUsdol Osha | York | PA | — | ◇ UNVERIFIED |
| UDUS Dol Osha - Andover Area Office | Boxborough | MA | — | ◇ UNVERIFIED |
| UOUsdol Osha-atlanta East | Suwanee | GA | — | ◇ UNVERIFIED |
| UOUsdol Osha - Atlanta West Ao | Mableton | GA | — | ◇ UNVERIFIED |
