| WCWest Coast Materials | Oakdale, CA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| WIWestco Iron Works INC | Newman, CA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| WGWestern Graphics | Modesto, CA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| WSWestern Stone Products INC | Hughson, CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WSWestern Stone Products INC | Modesto, CA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| WUWhite Umbrella Enterprises LLC | Modesto, CA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| WSWilkey Sheet Metal, INC. | Turlock, CA | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| WPWilkins Pump Knickerbocker Electric INC | Oakdale, CA | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| WPWilley Printing CO | Modesto, CA | Printing and Related Support Activities323114 | — | ◇ UNVERIFIED |
| WCWood Colony Woodworks | Modesto, CA | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| WCWood Connection, INC. | Modesto, CA | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| WGWorld Grocers | Turlock, CA | Food Manufacturing311512 | — | ◇ UNVERIFIED |
| WPWright Pharma INC Dba the Wright Group | Modesto, CA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| YMYosemite Meat Company | Modesto, CA | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| ZCZanini's Custom Cabinets | Modesto, CA | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
