| WBWaukesha Bearings CORP | Antigo | WI | Machinery Manufacturing333613 | — | ◐ LIKELY ACTIVE |
Waupaca Foundry INC - Plant 1 | Waupaca | WI | Primary Metal Manufacturing331510 | 500+ | ◐ LIKELY ACTIVE |
Waupaca Foundry INC -plant 4 | Marinette | WI | Primary Metal Manufacturing331510 | 500+ | ◐ LIKELY ACTIVE |
| WFWitmer Furniture LLC | Abbotsford | WI | Furniture and Related Product Manufacturing337122 | 20-99 | ◐ LIKELY ACTIVE |
| WAWolf Appliance INC | Fitchburg | WI | Electrical Equipment, Appliance & Component Manufacturing335220 | 500+ | ◐ LIKELY ACTIVE |
| WRWoods Run Forest Products INC | Colfax | WI | Wood Product Manufacturing321100 | 20-99 | ◐ LIKELY ACTIVE |
| 3C3m Company - Disposal | Appleton | WI | Paper Manufacturing322221 | — | ◐ LIKELY ACTIVE |
| 3C3m CO - Wausau Downtown | Wausau | WI | Nonmetallic Mineral Product Manufacturing327990 | — | ◐ LIKELY ACTIVE |
| 3W3m Wausau - Greystone Plant | Wausau | WI | Nonmetallic Mineral Product Manufacturing327992 | — | ◐ LIKELY ACTIVE |
| ALAbel, LLC | Appleton | WI | Fabricated Metal Product Manufacturing332000 | 20-99 | ◐ LIKELY ACTIVE |
| APA&b Process Systems | Stratford | WI | Fabricated Metal Product Manufacturing332420 | 100-499 | ◐ LIKELY ACTIVE |
| AGAcme Galvanizing INC | Milwaukee | WI | Fabricated Metal Product Manufacturing332810 | — | ◐ LIKELY ACTIVE |
| AGAcs Group | New Berlin | WI | Machinery Manufacturing333248 | 100-499 | ◐ LIKELY ACTIVE |
| ATAd Tech Industries INC | Watertown | WI | Chemical Manufacturing325510 | 100-499 | ◐ LIKELY ACTIVE |
| ADAdvance Die Cast LLC | Milwaukee | WI | Primary Metal Manufacturing331310 | 20-99 | ◐ LIKELY ACTIVE |
| AFAdvance Fittings CORP | Elkhorn | WI | Fabricated Metal Product Manufacturing332919 | 20-99 | ◐ LIKELY ACTIVE |
| ATAdvance Transformer CO | Boscobel | WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| AIAgra Industries INC | Merrill | WI | Primary Metal Manufacturing331200 | 20-99 | ◐ LIKELY ACTIVE |
| AMAhlstrom Mosinee LLC | Mosinee | WI | Food Manufacturing311111 | — | ◐ LIKELY ACTIVE |
| ANAhlstrom NA Specialty Solutions LLC | Kaukauna | WI | Paper Manufacturing322110 | — | ◐ LIKELY ACTIVE |
| AHA H Stock Mfg Corporation | Newton | WI | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| ADAllied Dies INC | Chippewa Falls | WI | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| AMAll Metal Stamping INC. | Abbotsford | WI | Fabricated Metal Product Manufacturing332510 | 20-99 | ◐ LIKELY ACTIVE |
| ACAmcor Converter Films | Oshkosh | WI | Plastics and Rubber Products Manufacturing326112 | 100-499 | ◐ LIKELY ACTIVE |
| AWAmcor Wisconsin, LLC | New London | WI | Paper Manufacturing322221 | — | ◐ LIKELY ACTIVE |
| AWAmcor Wisconsin, LLC | Boscobel | WI | Paper Manufacturing322220 | — | ◐ LIKELY ACTIVE |
American Exchanger Services, INC. | Hartford | WI | Fabricated Metal Product Manufacturing332410 | — | ◐ LIKELY ACTIVE |
| ABAmrize Building Envelope LLC | De Forest | WI | Plastics and Rubber Products Manufacturing326150 | — | ◐ LIKELY ACTIVE |
| ALAmron L.l.c. - Antigo | Antigo | WI | Fabricated Metal Product Manufacturing332992 | — | ◐ LIKELY ACTIVE |
| AMAndersen Menomonie INC | Menomonie | WI | Wood Product Manufacturing321911 | 100-499 | ◐ LIKELY ACTIVE |
| ACAnderson Custom Processing | Belleville | WI | Food Manufacturing311221 | 20-99 | ◐ LIKELY ACTIVE |
Angi Energy Systems, LLC | Janesville | WI | Machinery Manufacturing333298 | — | ◐ LIKELY ACTIVE |
| ASApache Stainless Equip CORP Industrial Dr | Beaver Dam | WI | Fabricated Metal Product Manufacturing332000 | — | ◐ LIKELY ACTIVE |
| AHApi Heat Transfer | Iron Ridge | WI | Fabricated Metal Product Manufacturing332310 | 1-19 | ◐ LIKELY ACTIVE |
| ACAppleton Coated LLC - Combined Locks Mill | Combined Locks | WI | Paper Manufacturing322120 | — | ◐ LIKELY ACTIVE |
| AEAppleton Electric LLC | South Milwaukee | WI | Primary Metal Manufacturing331510 | — | ◐ LIKELY ACTIVE |
| AFArchitectural Forest Products LLC | Two Rivers | WI | Wood Product Manufacturing321211 | 20-99 | ◐ LIKELY ACTIVE |
| AGArdagh Glass INC. (burlington) | Burlington | WI | Nonmetallic Mineral Product Manufacturing327210 | — | ◐ LIKELY ACTIVE |
| AIAshland Industries INC | Ashland | WI | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
Associated Milk Producers Jim Falls Div | Jim Falls | WI | Food Manufacturing311510 | — | ◐ LIKELY ACTIVE |
| ABAstec Burlington | Burlington | WI | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
Astronautics Corporation of America | Oak Creek | WI | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| AFAti Forged Products | Appleton | WI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| AMAtlas Molded Products a Division of Atlas Roofing CORP | Fond Du Lac | WI | Plastics and Rubber Products Manufacturing326140 | 20-99 | ◐ LIKELY ACTIVE |
| ATAtlas Tag and Label | Neenah | WI | Paper Manufacturing322290 | 20-99 | ◐ LIKELY ACTIVE |
| ABAztalan Bio | Johnson Creek | WI | Chemical Manufacturing325193 | 20-99 | ◐ LIKELY ACTIVE |
| BRBadger Railing | Milwaukee | WI | Fabricated Metal Product Manufacturing332323 | 20-99 | ◐ LIKELY ACTIVE |
| BSBadger Sheet Metal Works | Green Bay | WI | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| BCBall Container LLC | Fort Atkinson | WI | Fabricated Metal Product Manufacturing332430 | — | ◐ LIKELY ACTIVE |
| BHBeaver Holdings INC Dba Shell Lake Woodcrafters | Shell Lake | WI | Furniture and Related Product Manufacturing337122 | 20-99 | ◐ LIKELY ACTIVE |