| WFWelter Forest Products, INC. | Richland Center | WI | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| WSWest Salem Planing and Molding, INC. | West Salem | WI | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| WCWhite Cedar Shingles, INC. | Superior | WI | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| WWWinter Woods, INC. | Glidden | WI | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| WBWisconsin Box Company | Cleveland | WI | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| WHWisconsin Hardwoods LLC | Mason | WI | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| WHWisconsin Homes INC. | Marshfield | WI | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| WVWisconsin Veneer and Plywood INC. | Mattoon | WI | Wood Product Manufacturing321211 | — | ◇ UNVERIFIED |
| WWWisconsin Window Concepts, INC. | Waukesha | WI | Wood Product Manufacturing321911 | — | ◇ UNVERIFIED |
| WRWolf River Lumber Company | New London | WI | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| WMWoodline Manufacturing INC | Superior | WI | Wood Product Manufacturing321912 | — | ◇ UNVERIFIED |
| WPWoodmill Products, INC. | New Berlin | WI | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| WLWoodruff Lumber CO. INC. | Vesper | WI | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| WHWoodspirit Handcraft | Ashland | WI | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| WWWorld Wide Box & Packaging CORP. | Racine | WI | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
