La Crosse Sign Co., INC. | Onalaska | WI | Miscellaneous Manufacturing339950 | 20-99 | ● ACTIVE |
| LBLakefront Brewery | Milwaukee | WI | Beverage and Tobacco Product Manufacturing312120 | 100-499 | ● ACTIVE |
Lake Shore Systems, INC. | Rhinelander | WI | Transportation Equipment Manufacturing336611 | 100-499 | ● ACTIVE |
Lakeside Plastics, INC. | Oshkosh | WI | Chemical Manufacturing325211 | 100-499 | ● ACTIVE |
Latitude CORP. | Verona | WI | Fabricated Metal Product Manufacturing332322 | 100-499 | ● ACTIVE |
Law Tanning CO. LLC | Milwaukee | WI | Leather and Allied Product Manufacturing316110 | 20-99 | ● ACTIVE |
Leer INC | New Lisbon | WI | Machinery Manufacturing333415 | — | ● ACTIVE |
Lemke Industrial Machine LLC | Marathon | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Leo Cancer Care, INC. | Middleton | WI | Computer and Electronic Product Manufacturing334517 | 20-99 | ● ACTIVE |
Letourneau Plastics, INC. | Oconto | WI | Plastics and Rubber Products Manufacturing326199 | 20-99 | ● ACTIVE |
| LTLindor Tool, INC | Saint Croix Falls | WI | Machinery Manufacturing333514 | 1-19 | ● ACTIVE |
Lindquist Machine Co., LLC | Green Bay | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Louis Hoffmann CO. | Menomonee Falls | WI | Fabricated Metal Product Manufacturing332323 | 1-19 | ● ACTIVE |
Lpi, INC. | Eau Claire | WI | Chemical Manufacturing325612 | 20-99 | ● ACTIVE |
Luvata Appleton LLC | Kimberly | WI | Primary Metal Manufacturing331420 | — | ● ACTIVE |
Mad City Labs, INC. | Madison | WI | Computer and Electronic Product Manufacturing334516 | 20-99 | ● ACTIVE |
Madison Defense Research LLC | Waunakee | WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| MCMagna-matic CORP | Waldo | WI | Fabricated Metal Product Manufacturing332216 | 1-19 | ● ACTIVE |
Manowske Welding CORP | Fond Du Lac | WI | Fabricated Metal Product Manufacturing332313 | 20-99 | ● ACTIVE |
Mantel Machine Products INC. | Menomonee Falls | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Marine Travelift INC | Sturgeon Bay | WI | Fabricated Metal Product Manufacturing332999 | 100-499 | ● ACTIVE |
| MMMarinette Marine Corporation | Marinette | WI | Transportation Equipment Manufacturing336610 | 20-99 | ● ACTIVE |
| MBMarion Body Works | Marion | WI | Machinery Manufacturing333924 | 100-499 | ● ACTIVE |
Marking Services INC | Milwaukee | WI | Paper Manufacturing322220 | 100-499 | ● ACTIVE |
Marlin Technologies, INC. | Horicon | WI | Computer and Electronic Product Manufacturing334519 | 20-99 | ● ACTIVE |
| MMMarten Machining, INC. | Stevens Point | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
M.a.s. Industries, INC. | Plymouth | WI | Printing and Related Support Activities323113 | 20-99 | ● ACTIVE |
| MGMasters Gallery Foods, Incorporated | Plymouth | WI | Food Manufacturing311513 | 100-499 | ● ACTIVE |
| MIMatalco INC | Wisconsin Rapids | WI | Primary Metal Manufacturing331314 | 20-99 | ● ACTIVE |
Matenaer CORP | West Bend | WI | Fabricated Metal Product Manufacturing332116 | 100-499 | ● ACTIVE |
| MAMaterion Advanced Chemicals INC | Milwaukee | WI | Chemical Manufacturing325180 | — | ● ACTIVE |
Mauston Tool Corporation | Mauston | WI | Machinery Manufacturing333511 | 1-19 | ● ACTIVE |
Max Weiss CO LLC | Milwaukee | WI | Fabricated Metal Product Manufacturing332312 | 20-99 | ● ACTIVE |
Maynard Steel Casting CO | Milwaukee | WI | Primary Metal Manufacturing331510 | 100-499 | ● ACTIVE |
M-b Companies, INC | New Holstein | WI | Machinery Manufacturing333120 | — | ● ACTIVE |
Mccormick Industries INC | Appleton | WI | Fabricated Metal Product Manufacturing332721 | 1-19 | ● ACTIVE |
Mcl Industries, INC. | Pulaski | WI | Electrical Equipment, Appliance & Component Manufacturing335314 | 100-499 | ● ACTIVE |
Mcmillan Electric CO | Woodville | WI | Electrical Equipment, Appliance & Component Manufacturing335310 | 100-499 | ● ACTIVE |
Mcnally Industries, LLC | Grantsburg | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Meister Cheese Company, LLC | Muscoda | WI | Food Manufacturing311513 | 100-499 | ● ACTIVE |
Merrill Iron & Steel INC. | Schofield | WI | Fabricated Metal Product Manufacturing332312 | 100-499 | ● ACTIVE |
| MOMetalcraft of Mayville INC | Mayville | WI | Fabricated Metal Product Manufacturing332320 | 100-499 | ● ACTIVE |
Metal Forms Corporation | Milwaukee | WI | Fabricated Metal Product Manufacturing332322 | 20-99 | ● ACTIVE |
Metallics INC | Onalaska | WI | Printing and Related Support Activities323111 | 100-499 | ● ACTIVE |
Metal Products, Incorporated | Appleton | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ● ACTIVE |
Metaltek International, INC. | Waukesha | WI | Primary Metal Manufacturing331529 | 500+ | ● ACTIVE |
Mid-city Steel LLC | La Crosse | WI | Textile Mills313300 | 20-99 | ● ACTIVE |
Midcon Products INC | Hortonville | WI | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ● ACTIVE |
Midstar Printing and Marketing Services, LLC | Plymouth | WI | Printing and Related Support Activities323111 | 1-19 | ● ACTIVE |
Mid Valley Industries, LLC | Kaukauna | WI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |