| UPUnited Partition Systems Inc | Ontario | CA | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| UDUrban Designs | Ontario | CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| UCU.S. Controls, Inc. | Ontario | CA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| UCU.S. Controls, Inc. | Ontario | CA | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| UMUS Merchants Financial Group | Ontario | CA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| USU S Tooling and Spas INC | Ontario | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| USU S Tooling & Spas Manufacturi | Ontario | CA | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| VAVirtue Air Conditioning INC | Ontario | CA | Computer and Electronic Product Manufacturing334512 | — | ◇ UNVERIFIED |
| VMV & M Manufacturing INC | Ontario | CA | Furniture and Related Product Manufacturing337215 | — | ◇ UNVERIFIED |
| VFVnb Fashion, INC. | Ontario | CA | Apparel Manufacturing315212 | — | ◇ UNVERIFIED |
| WCWalker Corporation | Ontario | CA | Fabricated Metal Product Manufacturing332119 | — | ◇ UNVERIFIED |
| WEWarfield Electric Co, INC | Ontario | CA | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| WPWarren Packaging INC. | Ontario | CA | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| WSWarrior Systems | Ontario | CA | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| WSWestern States Wholesale INC Dba Patio Industries | Ontario | CA | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
 Western Technology Associates | Ontario | CA | Machinery Manufacturing333319 | — | ◇ UNVERIFIED |
| WPWholesale Pallets INC | Ontario | CA | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
 Wilhelmsen Ships Service INC | Ontario | CA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| WDWilliam D Ludlow | Ontario | CA | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| WHWing Hing Food LLC | Ontario | CA | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| YSYesco Signs, LLC. | Ontario | CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| YPYillik Precision Carbides | Ontario | CA | Machinery Manufacturing333613 | — | ◇ UNVERIFIED |
| ZWZb Wire Works INC | Ontario | CA | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| ZWZimex Well Products, LLC | Ontario | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
