Calumet Electronics CORP | Calumet, MI | Computer and Electronic Product Manufacturing334412 | — | ● ACTIVE |
| WRWarm Rain Corporation | Calumet, MI | Chemical Manufacturing325211 | 20–99 | ● ACTIVE |
A & S Industrial LLC | Chassell, MI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Great Lakes Sound & Vibration INC | Calumet, MI | Fabricated Metal Product Manufacturing332322 | — | ● ACTIVE |
Infrared Telemetrics INC | Hancock, MI | Computer and Electronic Product Manufacturing334513 | — | ● ACTIVE |
Nitrate Elimination CO INC | Lake Linden, MI | Chemical Manufacturing325414 | — | ● ACTIVE |
Williams Parts & Supply CO. INC. | Calumet, MI | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| NCNeuvokas Corporation | Ahmeek, MI | Nonmetallic Mineral Product Manufacturing327999 | — | ◐ LIKELY ACTIVE |
| PCPeninsula Copper Industries INC | Hubbell, MI | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| PCPasty Central | Calumet, MI | Food Manufacturing311412 | — | ◐ LIKELY ACTIVE |
| PDPayne & Dolan INC C19 | Hancock Twp, MI | Petroleum and Coal Products Manufacturing324121 | — | ◐ LIKELY ACTIVE |
| IIIowa Illinois Warehouse Services INC | Calumet, MI | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| KNKeweenaw National Historical Park Advisory Commission | Hancock, MI | Primary Metal Manufacturing331410 | — | ◇ UNVERIFIED |
| OFOsceola Fiberglass Mfg INC | Calumet, MI | Furniture and Related Product Manufacturing337125 | — | ◇ UNVERIFIED |
| RERippa Enterprises LLC | Calumet, MI | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| SBSuperior Block CO INC | Houghton, MI | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| SSSuperior Sand & Gravel INC | Hancock, MI | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BMBay Machine INC. | Calumet, MI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| CRCaladan Robotics, INC. | Calumet, MI | Electrical Equipment, Appliance & Component Manufacturing335313 | — | ◐ LIKELY ACTIVE |
| CWCarrousel Winery, L.l.c. | South Range, MI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| GGGitche Gumee Ciderworks, INC. | Hancock, MI | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| OSOrbion Space Technology Inc. | Houghton, MI | Transportation Equipment Manufacturing336415 | 20–99 | ◐ LIKELY ACTIVE |
| SSSuperior Sustainable Solutions LLC | Houghton, MI | Wood Product Manufacturing321215 | — | ◐ LIKELY ACTIVE |
| VCVollwerth & Co. | Hancock, MI | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| NMNion Metals LLC | Houghton, MI | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| RTRevex Technologies, INC. | Houghton, MI | Primary Metal Manufacturing331410 | — | ◐ LIKELY ACTIVE |
| AWAnderson Welding & Mfg INC | Chassell, MI | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| DGDa Glass America INC. | Calumet, MI | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| HFHorner Flooring Company INC | Dollar Bay, MI | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| KWKenton Wood Works | Trout Creek, MI | Machinery Manufacturing333210 | — | ◇ UNVERIFIED |
| KBKeweenaw Brewing Company LLC | South Range, MI | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| PDPayne & Dolan INC C19 | Hancock Twp, MI | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RWRain Warm Corporation | Hancock, MI | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| RMRel Machine INC | Calumet, MI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| RIRoyale INC. | Calumet, MI | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| SSSuperior Suppliers Network, LLC | Houghton, MI | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| WCWarmrain Corporation | Hancock, MI | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |