| LMLegend Manufacturing INC | Alma | MI | Machinery Manufacturing333999 | 100-499 | ◐ LIKELY ACTIVE |
| LTLlink Technologies | Brown City | MI | Transportation Equipment Manufacturing336360 | 20-99 | ◐ LIKELY ACTIVE |
| LEL&w Engineering Plt4 | Blissfield | MI | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| MMMagna Modular Systems LLC dba AIM Systems | Warren | MI | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MUMayser USA INC | Belleville | MI | Transportation Equipment Manufacturing336320 | 20-99 | ◐ LIKELY ACTIVE |
| MIMcclain Industries, INC. | Sterling Hts | MI | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| MTMelling Tool CO | Jackson | MI | Machinery Manufacturing333618 | 100-499 | ◐ LIKELY ACTIVE |
| MAMeridan Automotive Systems | Ionia | MI | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| MMMetalfab Manufacturing, INC | Mio | MI | Fabricated Metal Product Manufacturing332999 | — | ◐ LIKELY ACTIVE |
| MMMetric Manufacturing CO INC | Lowell | MI | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MIMico Industries INC | Kentwood | MI | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| MPMisc Products, INC. | Macomb | MI | Transportation Equipment Manufacturing336360 | 20-99 | ◐ LIKELY ACTIVE |
| MOMnp Ovidon Manufacturing LLC | Howell | MI | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| MCModineer Coating Div North | Benton Harbor | MI | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| MPModineer Plant 6 | Niles | MI | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| MMMoeller Mfg Company LLC | Harbor Springs | MI | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| NDNeapco Drivelines - Belleville, MI | Belleville | MI | Transportation Equipment Manufacturing336211 | 500+ | ◐ LIKELY ACTIVE |
| NANorth American Mold LLC | Auburn Hills | MI | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| PIPartify in | Fraser | MI | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
Patrick Industries, Inc. d/b/a Medallion Instrumentation Systems | Spring Lake | MI | Computer and Electronic Product Manufacturing334418 | 100-499 | ◐ LIKELY ACTIVE |
| PTPhoenix Trailers LLC | East Jordan | MI | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| PNPlasan North America | Walker | MI | Transportation Equipment Manufacturing336992 | 100-499 | ◐ LIKELY ACTIVE |
| PPPortland Products INC | Portland | MI | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| PEPostle Extrusion | Cassopolis | MI | Primary Metal Manufacturing331316 | 100-499 | ◐ LIKELY ACTIVE |
| PFProgressive Finishing, INC. | Chesterfield | MI | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| PMProto-tek Manufacturing, INC | Roseville | MI | Transportation Equipment Manufacturing336992 | — | ◐ LIKELY ACTIVE |
| RBRassini Brakes | Flint | MI | Fabricated Metal Product Manufacturing332112 | 100-499 | ◐ LIKELY ACTIVE |
| RIRobobuoy INC. | Detroit | MI | Transportation Equipment Manufacturing336612 | — | ◐ LIKELY ACTIVE |
| RRRoll Rite LLC | Gladwin | MI | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| RPRoush Performance INC | Livonia | MI | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| SAS a Automotive LTD | Webberville | MI | Transportation Equipment Manufacturing336111 | 100-499 | ◐ LIKELY ACTIVE |
| SASA Automotive - Owosso | Owosso | MI | Transportation Equipment Manufacturing336111 | 20-99 | ◐ LIKELY ACTIVE |
| SISabre-tec INC | Chesterfield | MI | Transportation Equipment Manufacturing336992 | — | ◐ LIKELY ACTIVE |
| SCSchaller Corp-plant #2 | Chesterfield | MI | Transportation Equipment Manufacturing336370 | 20-99 | ◐ LIKELY ACTIVE |
| SCShape Corp - 14600 172nd Ave. | Grand Haven | MI | Fabricated Metal Product Manufacturing332312 | 500+ | ◐ LIKELY ACTIVE |
| SCSilver Creek Manufacturing INC | Norton Shores | MI | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| SSSliding Systems INC | Haslett | MI | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| STSloan Transportation Products, INC. | Holland | MI | Transportation Equipment Manufacturing336310 | — | ◐ LIKELY ACTIVE |
| SESpectrum E-coat INC | Grand Rapids | MI | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
| STSteel Tool & Engineering CO | Brownstown Twp | MI | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| TSThai Summit America CORP | Howell | MI | Transportation Equipment Manufacturing336370 | 500+ | ◐ LIKELY ACTIVE |
The Shyft Group INC | Charlotte | MI | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| TDTiberina Detroit INC | Detroit | MI | Transportation Equipment Manufacturing336360 | 20-99 | ◐ LIKELY ACTIVE |
| TGTi Group Automotive Systems LLC | Caro | MI | Transportation Equipment Manufacturing336310 | — | ◐ LIKELY ACTIVE |
| TGTi Group Automotive Systems LLC - Caro Test Center | Caro | MI | Transportation Equipment Manufacturing336312 | — | ◐ LIKELY ACTIVE |
| TATower Automotive Operations USA LLC | Elkton | MI | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| TBToyota Boshoku America - Technical Center | Novi | MI | Transportation Equipment Manufacturing336360 | 100-499 | ◐ LIKELY ACTIVE |
| TTTrailer Technologies Holdings LLC | Wixom | MI | Fabricated Metal Product Manufacturing332999 | — | ▲ REPORTED CLOSED |
| TITram INC | Plymouth | MI | Transportation Equipment Manufacturing336320 | 100-499 | ◐ LIKELY ACTIVE |
| TATransform Automotive - Sterling Heights | Sterling Heights | MI | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |