| IPIseli Precision LLC. | Walworth | WI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| JIJax INC | Menomonee Falls | WI | Petroleum and Coal Products Manufacturing324191 | 20-99 | ◐ LIKELY ACTIVE |
| JLJ L French CORP - Taylor Dr Facility | Sheboygan | WI | Primary Metal Manufacturing331310 | — | ◐ LIKELY ACTIVE |
| JPJoerns Property | Stevens Point | WI | Computer and Electronic Product Manufacturing334118 | — | ◐ LIKELY ACTIVE |
| JAJohn a Biewer Lumber CO | Prentice | WI | Wood Product Manufacturing321100 | — | ◐ LIKELY ACTIVE |
| JDJohn Deere Horicon Works - 101 Building | Horicon | WI | Fabricated Metal Product Manufacturing332110 | — | ◐ LIKELY ACTIVE |
| KIKcs International INC \2013 Plant 6 | Pulaski | WI | Transportation Equipment Manufacturing336612 | — | ◐ LIKELY ACTIVE |
| KKerry | Beloit | WI | Food Manufacturing311513 | 500+ | ◐ LIKELY ACTIVE |
| KFKikkoman Foods | Walworth | WI | Food Manufacturing311940 | 100-499 | ◐ LIKELY ACTIVE |
| KCKohler CO - Town of Mosel Plant | Sheboygan | WI | Machinery Manufacturing333611 | — | ◐ LIKELY ACTIVE |
| KCKondex CORP | Lomira | WI | Machinery Manufacturing333111 | — | ◐ LIKELY ACTIVE |
| KIKrueger International INC | Bonduel | WI | Plastics and Rubber Products Manufacturing326100 | — | ◐ LIKELY ACTIVE |
| LULactalis USA | Belmont | WI | Food Manufacturing311513 | — | ◐ LIKELY ACTIVE |
| LFLa Force Hardware and Manufacturing | Green Bay | WI | Fabricated Metal Product Manufacturing332320 | — | ◐ LIKELY ACTIVE |
| LOLand Olakes Spencer | Spencer | WI | Food Manufacturing311513 | — | ◐ LIKELY ACTIVE |
| LILincoln Industries of Wisconsin LLC | New Berlin | WI | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| LMLmi Manufacturing Holdings LLC | Allenton | WI | Fabricated Metal Product Manufacturing332999 | 1-19 | ◐ LIKELY ACTIVE |
| LJLock Joint Tube Wisconsin | De Pere | WI | Primary Metal Manufacturing331200 | — | ◐ LIKELY ACTIVE |
| LCLoudspeaker Components LLC | Lancaster | WI | Computer and Electronic Product Manufacturing334290 | 20-99 | ◐ LIKELY ACTIVE |
Luvata Appleton LLC | Appleton | WI | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| MCMadison-kipp CORP - Waubesa | Madison | WI | Primary Metal Manufacturing331521 | — | ◐ LIKELY ACTIVE |
| MIManitowoc Ice, INC. | Manitowoc | WI | Machinery Manufacturing333410 | — | ◐ LIKELY ACTIVE |
Mars Petcare US INC | Tomah | WI | Food Manufacturing311111 | — | ◐ LIKELY ACTIVE |
| MPMartin Petersen CO INC | Kenosha | WI | Fabricated Metal Product Manufacturing332322 | — | ◐ LIKELY ACTIVE |
| MLMastermold LLC | Mauston | WI | Plastics and Rubber Products Manufacturing326100 | — | ◐ LIKELY ACTIVE |
| MMMatzel Manufacturing, INC. | Milwaukee | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MSMeca Solutions | Green Bay | WI | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| MSMegtec Systems | De Pere | WI | Machinery Manufacturing333240 | — | ◐ LIKELY ACTIVE |
| MCMelron CORP | Weston | WI | Primary Metal Manufacturing331520 | — | ◐ LIKELY ACTIVE |
| MIMenard INC Midwest Mfg & Dist | Eau Claire | WI | Wood Product Manufacturing321114 | — | ◐ LIKELY ACTIVE |
| MSMilk Specialties Global - Adell | Adell | WI | Food Manufacturing311119 | — | ◐ LIKELY ACTIVE |
| MMMilsco Mfg CO | Redgranite | WI | Plastics and Rubber Products Manufacturing326140 | — | ◐ LIKELY ACTIVE |
| MEMpi Engineered Technologies | Deerfield | WI | Fabricated Metal Product Manufacturing332116 | — | ◐ LIKELY ACTIVE |
| MEMpi Engineered Technologies | Deerfield | WI | Transportation Equipment Manufacturing336330 | — | ◐ LIKELY ACTIVE |
| MCMullins Cheese INC | Marshfield | WI | Food Manufacturing311510 | — | ◐ LIKELY ACTIVE |
| NGNelson Global Products INC | Arcadia | WI | Fabricated Metal Product Manufacturing332990 | — | ◐ LIKELY ACTIVE |
| NGNelson Global Products INC | Viroqua | WI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| NGNemak Gateway Plant | Sheboygan | WI | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| NBNeo Brake Systems INC | Oak Creek | WI | Machinery Manufacturing333511 | 20-99 | ◐ LIKELY ACTIVE |
| NHNestle Health Science | Eau Claire | WI | Food Manufacturing311500 | — | ◐ LIKELY ACTIVE |
| NGNexen Group INC | Webster | WI | Machinery Manufacturing333240 | 100-499 | ◐ LIKELY ACTIVE |
| NINiro INC | Hudson | WI | Machinery Manufacturing333240 | — | ◐ LIKELY ACTIVE |
| NNitrosteel | Pleasant Prairie | WI | Fabricated Metal Product Manufacturing332811 | — | ◐ LIKELY ACTIVE |
| NPNorthern Precision Casting CO | Lake Geneva | WI | Primary Metal Manufacturing331510 | — | ◐ LIKELY ACTIVE |
| NWNorthern Wisconsin Mfg CO | Pepin | WI | Fabricated Metal Product Manufacturing332999 | 1-19 | ◐ LIKELY ACTIVE |
| OFOconto Falls Tissue Incorporated | Oconto Falls | WI | Paper Manufacturing322120 | — | ◐ LIKELY ACTIVE |
| OGOec Graphics INC | Oshkosh | WI | Printing and Related Support Activities323120 | 100-499 | ◐ LIKELY ACTIVE |
| OAOhly Americas | Boyceville | WI | Food Manufacturing311510 | — | ◐ LIKELY ACTIVE |
| OFOlympus Flags & Banner | Milwaukee | WI | Printing and Related Support Activities323110 | 100-499 | ◐ LIKELY ACTIVE |
| OFOn-cor Frozen Foods - LLC Redi-serve Foods Div | Fort Atkinson | WI | Food Manufacturing311412 | — | ◐ LIKELY ACTIVE |