| HIHighlight Industries | Wyoming | MI | Machinery Manufacturing333993 | 20-99 | ◐ LIKELY ACTIVE |
Hjr Equipment Rental INC | Escanaba | MI | Transportation Equipment Manufacturing336510 | 1-19 | ◐ LIKELY ACTIVE |
| HUHolcim USA INC - Lafarge Alpena Plant | Alpena | MI | Nonmetallic Mineral Product Manufacturing327310 | — | ◐ LIKELY ACTIVE |
| HPHolland Panel Products | Holland | MI | Wood Product Manufacturing321219 | 1-19 | ◐ LIKELY ACTIVE |
| HIHoneywell International (burdick & Jackson) | Muskegon | MI | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| HOH O Trerice CO | Oak Park | MI | Computer and Electronic Product Manufacturing334512 | 20-99 | ◐ LIKELY ACTIVE |
| HCHowmet Corporation, Plant 4 | Whitehall | MI | Primary Metal Manufacturing331492 | — | ◐ LIKELY ACTIVE |
| HCHowmet Corporation, Plants 1 & 3 | Whitehall | MI | Primary Metal Manufacturing331528 | — | ◐ LIKELY ACTIVE |
Huntsman Advanced Materials Americas, LLC. | East Lansing | MI | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
Husky Precision, INC. | Roseville | MI | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| HAHutchinson Antivibration Systems, INC (a9364) | Cadillac | MI | Plastics and Rubber Products Manufacturing326291 | — | ◐ LIKELY ACTIVE |
| HAHutchinson Antivibration Systems, INC. (e5094) | Grand Rapids | MI | Plastics and Rubber Products Manufacturing326291 | — | ◐ LIKELY ACTIVE |
| IIac | St Clair | MI | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| ISIdeal Steel & Builders Supplies LLC | Detroit | MI | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| ISI.d. Systems INC. | Norton Shores | MI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| III I Stanley Co., Inc. | Battle Creek | MI | Transportation Equipment Manufacturing336320 | 500+ | ◐ LIKELY ACTIVE |
| IRImco Recycling of Michigan, LLC | Coldwater | MI | Primary Metal Manufacturing331314 | — | ◐ LIKELY ACTIVE |
| IMImperial Metal Products CO INC | Grand Rapids | MI | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| ILIndica-mcs LLC | Fowlerville | MI | Plastics and Rubber Products Manufacturing326150 | — | ◐ LIKELY ACTIVE |
| IAIndustrial Automation LLC | Rochester Hills | MI | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| IDInland Diamond Products | Madison Heights | MI | Nonmetallic Mineral Product Manufacturing327910 | 20-99 | ◐ LIKELY ACTIVE |
| ICInnotec Corporation | Zeeland | MI | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
| IDInnovative Design Solutions | Sterling Heights | MI | Computer and Electronic Product Manufacturing334418 | — | ◐ LIKELY ACTIVE |
| IPInnovative Products Unlimited | Niles | MI | Furniture and Related Product Manufacturing337127 | 20-99 | ◐ LIKELY ACTIVE |
| ICInterior Concepts Corporation | Spring Lake | MI | Furniture and Related Product Manufacturing337214 | 20-99 | ◐ LIKELY ACTIVE |
Inter Lakes Bases INC | Fraser | MI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| IMInterstate Manufacturing | White Pigeon | MI | Transportation Equipment Manufacturing336214 | 20-99 | ◐ LIKELY ACTIVE |
| ICIntra Corporation (1/1/2025-6/30/2025) | Westland | MI | Machinery Manufacturing333514 | 100-499 | ◐ LIKELY ACTIVE |
| IDItw Drawform | Zeeland | MI | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
| JPJbs Plainwell | Plainwell | MI | Food Manufacturing311611 | 500+ | ◐ LIKELY ACTIVE |
| JCJedco Campus | Grand Rapids | MI | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
Jolico / J-B Tool, Inc | Utica | MI | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| JTJonesville Tool & Manufacturing, Inc. | Jonesville | MI | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| JMJvis Mfg., LLC | Benton Harbor | MI | Plastics and Rubber Products Manufacturing326111 | — | ◐ LIKELY ACTIVE |
| KLKBDetroit, LLC | Detroit | MI | Food Manufacturing311612 | 20-99 | ◐ LIKELY ACTIVE |
| KPKendrick Plastics | Grand Rapids | MI | Transportation Equipment Manufacturing336360 | 100-499 | ◐ LIKELY ACTIVE |
| KUKiekert USA, Inc (R&D Location) | Wixom | MI | Transportation Equipment Manufacturing336320 | 20-99 | ◐ LIKELY ACTIVE |
| KQKilwin's Quality Confections | Petoskey | MI | Food Manufacturing311352 | 100-499 | ◐ LIKELY ACTIVE |
| KIKimprint, Inc. | Plymouth | MI | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| KAKIP America, Inc. | Novi | MI | Computer and Electronic Product Manufacturing334118 | 20-99 | ◐ LIKELY ACTIVE |
| KTKirchhoff-Automotive- Tecumseh | Tecumseh | MI | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
Knoedler Manufacturers INC | Battle Creek | MI | Transportation Equipment Manufacturing336360 | 1-19 | ◐ LIKELY ACTIVE |
| KKKostal Kontakt Systeme INC | Rochester Hills | MI | Machinery Manufacturing333999 | 100-499 | ◐ LIKELY ACTIVE |
| LELacks Enterprises INC | Kentwood | MI | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| LILacks Industries INC | Kentwood | MI | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| LILacks Industries, INC. | Kentwood | MI | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| LFLakeland Finishing INC | Grand Rapids | MI | Fabricated Metal Product Manufacturing332812 | 100-499 | ◐ LIKELY ACTIVE |
| LFLakeshore Fittings INC. | Grand Haven | MI | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
Lakeshore Mold & Die LLC | Stevensville | MI | Machinery Manufacturing333514 | 1-19 | ◐ LIKELY ACTIVE |
Lake X-ray, INC | Dowagiac | MI | Computer and Electronic Product Manufacturing334517 | 1-19 | ◐ LIKELY ACTIVE |