| PIPanoramic INC | Janesville, WI | Paper Manufacturing322213 | 100–499 | ◐ LIKELY ACTIVE |
| PCPratt (beloit Corrugating) LLC | Beloit, WI | Paper Manufacturing322211 | 100–499 | ◐ LIKELY ACTIVE |
| SFSchreiber Foods Inc. - Beloit | Beloit, WI | Food Manufacturing311511 | 100–499 | ◐ LIKELY ACTIVE |
| SFSeneca Foods Corporation | Janesville, WI | Food Manufacturing311421 | 500+ | ◐ LIKELY ACTIVE |
| SSpray-tek | Beloit, WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| STSSI Technologies, LLC - Palmer | Janesville, WI | Electrical Equipment, Appliance & Component Manufacturing335314 | 100–499 | ◐ LIKELY ACTIVE |
| STStainless Tank | Beloit, WI | Transportation Equipment Manufacturing336212 | 100–499 | ◐ LIKELY ACTIVE |
| STStoughton Trailers LLC | Brodhead, WI | Transportation Equipment Manufacturing336210 | 100–499 | ◐ LIKELY ACTIVE |
| STStoughton Trailers LLC. | Evansville, WI | Transportation Equipment Manufacturing336212 | 100–499 | ◐ LIKELY ACTIVE |
| TBThe Broaster Company | Beloit, WI | Machinery Manufacturing333318 | 20–99 | ◐ LIKELY ACTIVE |
| TUTigre Usa, INC. | Janesville, WI | Plastics and Rubber Products Manufacturing326121 | 100–499 | ◐ LIKELY ACTIVE |
| UAUnited Alloy, INC. | Janesville, WI | Fabricated Metal Product Manufacturing332312 | 500+ | ◐ LIKELY ACTIVE |
| WCWestern Container Corp JVL | Janesville, WI | Paper Manufacturing322219 | 20–99 | ◐ LIKELY ACTIVE |
| WKWisconsin Knife Works | Beloit, WI | Fabricated Metal Product Manufacturing332216 | 20–99 | ◐ LIKELY ACTIVE |
| RRRock Road Companies INC - Townline Pit | Beloit, WI | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| AWAlcoa Wheel Products | Beloit, WI | Primary Metal Manufacturing331520 | — | ◇ UNVERIFIED |
| CFCargill Feed & Nutrition Milton | Milton, WI | Food Manufacturing311110 | — | ◇ UNVERIFIED |
| FIFrito-lay INC | Beloit, WI | Food Manufacturing311910 | — | ◇ UNVERIFIED |
| GTGm Truck Group Janesville Assembly | Janesville, WI | Transportation Equipment Manufacturing336110 | — | ◇ UNVERIFIED |
| HIHufcor, INC. | Janesville, WI | Primary Metal Manufacturing331200 | — | ◇ UNVERIFIED |
| ICImpact Confections | Janesville, WI | Food Manufacturing311340 | — | ◇ UNVERIFIED |
| JGJanesville-sackner Group | Janesville, WI | Textile Mills313230 | — | ◇ UNVERIFIED |
| MBMetallic Bonds LTD | Beloit, WI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MBMidwest Biofuel, LLC | Clinton, WI | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| MTMonroe Truck Equipment | Janesville, WI | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| NANorth American Pipe CORP | Janesville, WI | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| SBSanford Business to Business | Janesville, WI | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| SFSeneca Foods CORP - Janesville Plant | Janesville, WI | Food Manufacturing311420 | — | ◇ UNVERIFIED |
| STSsi Technologies INC (former) | Janesville, WI | Fabricated Metal Product Manufacturing332117 | — | ◇ UNVERIFIED |
| USUnited Stars INC | Beloit, WI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WVWisconsin Vault Company INC | Janesville, WI | Miscellaneous Manufacturing339995 | — | ◇ UNVERIFIED |
| 7727-Beloit | Beloit, WI | Nonmetallic Mineral Product Manufacturing327320 | 1–19 | ◐ LIKELY ACTIVE |
| ACABITEC Corporation - Janesville | Janesville, WI | Food Manufacturing311225 | 20–99 | ◐ LIKELY ACTIVE |
| AIAireSafe International | Janesville, WI | Machinery Manufacturing333413 | 20–99 | ◐ LIKELY ACTIVE |
| APAvid Pallet Recycling, LLC. | Beloit, WI | Wood Product Manufacturing321920 | 20–99 | ◐ LIKELY ACTIVE |
| BPBeloit Plant | Beloit, WI | Food Manufacturing311919 | 500+ | ◐ LIKELY ACTIVE |
| BRBeloit/Rock River | Beloit, WI | Chemical Manufacturing325120 | 20–99 | ◐ LIKELY ACTIVE |
| CICaldwell, Inc. - Corporate | Beloit, WI | Machinery Manufacturing333923 | 20–99 | ◐ LIKELY ACTIVE |
| CACargill ANH - Milton, WI | Milton, WI | Food Manufacturing311119 | 20–99 | ◐ LIKELY ACTIVE |
| CICooper-Wilson Inc. | Beloit, WI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| CPCorrugated Packaging Beloit S | Beloit, WI | Paper Manufacturing322211 | 20–99 | ◐ LIKELY ACTIVE |
| DCDeVere Company | Janesville, WI | Chemical Manufacturing325611 | 20–99 | ◐ LIKELY ACTIVE |
| EEvansville | Evansville, WI | Primary Metal Manufacturing331210 | 1–19 | ◐ LIKELY ACTIVE |
| ECEvonik Corporation Janesville | Janesville, WI | Chemical Manufacturing325613 | 20–99 | ◐ LIKELY ACTIVE |
| ECEvonik Corporation Milton | Milton, WI | Chemical Manufacturing325613 | 20–99 | ◐ LIKELY ACTIVE |
| FCFermenting Cellars | Janesville, WI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| GPGazette Printing | Janesville, WI | Printing and Related Support Activities323111 | 20–99 | ◐ LIKELY ACTIVE |
| HSHB Specialty Foods Beloit | Beloit, WI | Food Manufacturing311824 | 20–99 | ◐ LIKELY ACTIVE |
| HSHelicopter Specialties, Inc. | Janesville, WI | Transportation Equipment Manufacturing336411 | 20–99 | ◐ LIKELY ACTIVE |
| HMHumane Manufacturing Company, LLC | Janesville, WI | Plastics and Rubber Products Manufacturing326291 | 20–99 | ◐ LIKELY ACTIVE |