| CPChemdesign Products INC | Marinette, WI | Chemical Manufacturing325000 | 100–499 | ● ACTIVE |
| LEL E Jones CO | Menominee, MI | Primary Metal Manufacturing331110 | 100–499 | ● ACTIVE |
Plutchak Fab LLC | Menominee, MI | Fabricated Metal Product Manufacturing332312 | 20–99 | ● ACTIVE |
R.w. Fernstrum & Company | Menominee, MI | Fabricated Metal Product Manufacturing332313 | 20–99 | ● ACTIVE |
The Enstrom Helicopter CORP | Menominee, MI | Transportation Equipment Manufacturing336411 | 100–499 | ● ACTIVE |
Arimon Technologies INC | Peshtigo, WI | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ● ACTIVE |
| MMMarinette Marine Corporation | Marinette, WI | Transportation Equipment Manufacturing336610 | 20–99 | ● ACTIVE |
| NCNorthern Coatings & Chemicals CO | Menominee, MI | Chemical Manufacturing325510 | 20–99 | ● ACTIVE |
| NFNorthern Fab of Menominee LLC | Menominee, MI | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
Samuel, Son & CO. (usa) INC. | Marinette, WI | Fabricated Metal Product Manufacturing332410 | — | ● ACTIVE |
Tyco Fire Products LP | Marinette, WI | Chemical Manufacturing325990 | — | ● ACTIVE |
Winsert, LLC | Marinette, WI | Primary Metal Manufacturing331510 | — | ● ACTIVE |
Evergreen Tool Company INC | Peshtigo, WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Fire Combat, INC. | Marinette, WI | Miscellaneous Manufacturing339999 | — | ● ACTIVE |
Imeco INC | Marinette, WI | Machinery Manufacturing333415 | — | ● ACTIVE |
Marinette Machine LLC | Marinette, WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Menco LLC | Wallace, MI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Mrc Machine INC | Pound, WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Vargo Tool & Die INC | Marinette, WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| ABAdvanced Blending Solutions LLC | Wallace, MI | Machinery Manufacturing333248 | 100–499 | ◐ LIKELY ACTIVE |
| KLKs Large Bore Pistons INC | Marinette, WI | Machinery Manufacturing333618 | 100–499 | ◐ LIKELY ACTIVE |
Waupaca Foundry INC -plant 4 | Marinette, WI | Primary Metal Manufacturing331510 | 500+ | ◐ LIKELY ACTIVE |
| BIBpm INC | Peshtigo, WI | Paper Manufacturing322120 | 20–99 | ◐ LIKELY ACTIVE |
| KCKimberly Clark CORP | Marinette, WI | Paper Manufacturing322120 | 100–499 | ◐ LIKELY ACTIVE |
| SWSuperior Welding & Manufacturing INC | Hermansville, MI | Machinery Manufacturing333318 | 20–99 | ◐ LIKELY ACTIVE |
U. P. Machine & Engineering CO. | Powers, MI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| KPKolbenschmidt Pistons USA LLC | Marinette, WI | Primary Metal Manufacturing331310 | — | ◐ LIKELY ACTIVE |
| ACAnchor Coupling INC | Menominee, MI | Fabricated Metal Product Manufacturing332510 | — | ◇ UNVERIFIED |
| FFibrek | Menominee, MI | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| MMMiddleby Marshall Holdings LLC Dba Nu-vu Food Service Systems | Menominee, MI | Machinery Manufacturing333241 | — | ◇ UNVERIFIED |
Boyle Design Group, LLC | Marinette, WI | Miscellaneous Manufacturing339950 | — | ◐ LIKELY ACTIVE |
| AMANS Machine, LLC | Peshtigo, WI | Fabricated Metal Product Manufacturing332710 | 1–19 | ◐ LIKELY ACTIVE |
| CCCarfair Composites USA INC | Wausaukee, WI | Plastics and Rubber Products Manufacturing326121 | 20–99 | ◐ LIKELY ACTIVE |
| CSComponent Solutions LLC | Menominee, MI | Wood Product Manufacturing321912 | 20–99 | ◐ LIKELY ACTIVE |
| FCFincantieri Company | Marinette, WI | Transportation Equipment Manufacturing336611 | 500+ | ◐ LIKELY ACTIVE |
| GVGoodman Veneer & Lumber CO | Goodman, WI | Wood Product Manufacturing321210 | — | ◐ LIKELY ACTIVE |
| NWNorth Wood Flooring | Coleman, WI | Wood Product Manufacturing321918 | 20–99 | ◐ LIKELY ACTIVE |
| LFLloyd Flanders Industries INC | Menominee, MI | Furniture and Related Product Manufacturing337121 | — | ◐ LIKELY ACTIVE |
| ABAlfredson Brothers Construction Company | Menominee, MI | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| AIAlliance Industries, INC. | Marinette, WI | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| DPDecor Products INC | Wausaukee, WI | Fabricated Metal Product Manufacturing332431 | — | ◇ UNVERIFIED |
| DPDunn Paper, INC. | Menominee, MI | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| ETEmerson Tool CO | Menominee, MI | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| FCFire Combat Div of Sensor Electronics | Marinette, WI | Machinery Manufacturing333999 | — | ◇ UNVERIFIED |
| FCFriday Canning CORP Country Garden Div | Coleman, WI | Food Manufacturing311420 | — | ◇ UNVERIFIED |
| ICIron City Enterprises INC | Menominee, MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| JJci/tyco | Marinette, WI | Chemical Manufacturing325990 | — | ◇ UNVERIFIED |
| NMNiagara Mill | Niagara, WI | Paper Manufacturing322110 | — | ◇ UNVERIFIED |
| SSSentinel Structures | Peshtigo, WI | Wood Product Manufacturing321210 | — | ◇ UNVERIFIED |
| TGTextron Gse - Premier | Marinette, WI | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |