| MCMuth Company LLC | Sheboygan, WI | Transportation Equipment Manufacturing336320 | 100–499 | ◐ LIKELY ACTIVE |
| OWOld Wisconsin Sausage Company, INC. | Sheboygan, WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| PBPaper Box and Specialty Company | Sheboygan, WI | Paper Manufacturing322212 | 20–99 | ◐ LIKELY ACTIVE |
| PFPlymouth Foam INC | Plymouth, WI | Plastics and Rubber Products Manufacturing326140 | — | ◐ LIKELY ACTIVE |
| PVPoly Vinyl Company INC | Sheboygan Falls, WI | Plastics and Rubber Products Manufacturing326121 | 100–499 | ◐ LIKELY ACTIVE |
| PIPRE-heat, Inc. | Oostburg, WI | Primary Metal Manufacturing331210 | 20–99 | ◐ LIKELY ACTIVE |
| TITorginol INC - Building a | Sheboygan, WI | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| WMWigwam Mills INC | Sheboygan, WI | Textile Mills313310 | 20–99 | ◐ LIKELY ACTIVE |
 Ereztech Labs LLC | Sheboygan Falls, WI | Chemical Manufacturing325190 | — | ◐ LIKELY ACTIVE |
| HLHendo, LLC Dba Optimal Performance Innovations (opi Llc) | Sheboygan, WI | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| AAAjs & Associates INC | Random Lake, WI | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| AHAldag Honold Mechanical | Sheboygan, WI | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
 American Excelsior CO | Sheboygan, WI | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| BMBemis Mfg CO - Plant D | Sheboygan Falls, WI | Plastics and Rubber Products Manufacturing326100 | — | ◇ UNVERIFIED |
| CICargill INC Malt Americas - Sheboygan | Sheboygan, WI | Food Manufacturing311211 | — | ◇ UNVERIFIED |
| FWFormer West Shore Industries INC | Sheboygan, WI | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| IGItw Graphics | Plymouth, WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| JLJ L Di Coat CO INC | Sheboygan, WI | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| KFKrier Foods LLC | Random Lake, WI | Food Manufacturing311422 | — | ◇ UNVERIFIED |
| LSLakeland Sports Center | Plymouth, WI | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| LSLakeland Sports Center, INC. | Greenbush, WI | Transportation Equipment Manufacturing336210 | — | ◇ UNVERIFIED |
| LDLakeshore Display CO INC | Sheboygan, WI | Wood Product Manufacturing321990 | — | ◇ UNVERIFIED |
| LFLeick Furniture, INC. | Sheboygan, WI | Furniture and Related Product Manufacturing337120 | — | ◇ UNVERIFIED |
| MTMain Tape Company | Plymouth, WI | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| MLManning Lighting, INC. | Sheboygan, WI | Fabricated Metal Product Manufacturing332320 | — | ◇ UNVERIFIED |
| NCNemschoff Chairs INC | Sheboygan, WI | Furniture and Related Product Manufacturing337120 | — | ◇ UNVERIFIED |
| NCNemschoff Chairs INC | Sheboygan, WI | Furniture and Related Product Manufacturing337120 | — | ◇ UNVERIFIED |
| PIPemco INC. | Sheboygan, WI | Paper Manufacturing322120 | — | ◇ UNVERIFIED |
| PWPolar Ware CO | Sheboygan, WI | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| PVPoly Vinyl CO INC | Kohler, WI | Plastics and Rubber Products Manufacturing326120 | — | ◇ UNVERIFIED |
| PKPsco Kieffer | Sheboygan, WI | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| RYRichardson Yacht Interiors | Sheboygan Falls, WI | Wood Product Manufacturing321000 | — | ◇ UNVERIFIED |
 Safco Products CO Dba Mayline- Wood Plant | Sheboygan, WI | Furniture and Related Product Manufacturing337210 | — | ◇ UNVERIFIED |
| SCSartori Company | Plymouth, WI | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| SPSheboygan Paperbox CO | Sheboygan, WI | Paper Manufacturing322210 | — | ◇ UNVERIFIED |
| SRSheridan Random Lake | Random Lake, WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| ULUniversal Lithographers | Sheboygan, WI | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| USU S Filter - Plymouth Products Division | Sheboygan, WI | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| American Excelsior Company Sheboygan | Sheboygan, WI | Plastics and Rubber Products Manufacturing326150 | 20–99 | ◐ LIKELY ACTIVE |
| AIAnchor Ingredients - Waldo | Waldo, WI | Food Manufacturing311613 | 1–19 | ◐ LIKELY ACTIVE |
| BHBlind Horse Winery, LLC | Kohler, WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| CCCertainTeed Ceilings - Plymouth | Plymouth, WI | Nonmetallic Mineral Product Manufacturing327420 | 20–99 | ◐ LIKELY ACTIVE |
| CIConceptWorks Inc. | Elkhart Lake, WI | Wood Product Manufacturing321999 | 20–99 | ◐ LIKELY ACTIVE |
| GPGateway Plant | Sheboygan, WI | Primary Metal Manufacturing331523 | 500+ | ◐ LIKELY ACTIVE |
| HSHSM Sheboygan / Spiller Springs (651) | Sheboygan, WI | Fabricated Metal Product Manufacturing332613 | 20–99 | ◐ LIKELY ACTIVE |
| HSHTT Sheboygan | Sheboygan, WI | Fabricated Metal Product Manufacturing332119 | 100–499 | ◐ LIKELY ACTIVE |
 Jifram Extrusions Inc. | Sheboygan Falls, WI | Plastics and Rubber Products Manufacturing326121 | 20–99 | ◐ LIKELY ACTIVE |
| JLJohnsonville, LLC | Sheboygan Falls, WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| KKho | Kohler, WI | Plastics and Rubber Products Manufacturing326113 | 20–99 | ◐ LIKELY ACTIVE |
| MMMiesfeld's Market | Sheboygan, WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
