| MWMidland West Manufacturing | Billings | MT | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| MPMike's Print and Copy, LLC | Missoula | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MCMiles City Seat Base | Miles City | MT | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MLMineralholics, LLC | Polson | MT | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| MVMission Valley Concrete | Pablo | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MRMissoula Ready Mix | Missoula | MT | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MCModerne Cabinet | Great Falls | MT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| MMModern Medicinal | Columbia Falls | MT | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| MAMontana Armory, INC. | Big Timber | MT | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| MCMontana Custom Log Homes, INC. | Victor | MT | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| MEMontana Ethanol Project | Great Falls | MT | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| MFMontana Firearms Group | Kalispell | MT | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| MFMontana Firearms Group, Inc. | Kalispell | MT | Fabricated Metal Product Manufacturing332994 | — | ◇ UNVERIFIED |
| MFMontana Fly Company, LLC | Columbia Falls | MT | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| MGMontana Gold Bullets | Kalispell | MT | Fabricated Metal Product Manufacturing332992 | — | ◇ UNVERIFIED |
| MIMontana Idaho Log and Timber | Victor | MT | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| MMMontana Materials and Construction Black Eagle | Great Falls | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MSMontana Specialty Mills LLC | Great Falls | MT | Food Manufacturing311224 | — | ◇ UNVERIFIED |
| MSMontana Sulphur and Chemical Company | Billings | MT | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| MSMontana Sulphur & Chemical | Billings | MT | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| MSMontana Sundown Dba Rocky Mountain Log Homes, LLC. | Hamilton | MT | Wood Product Manufacturing321992 | — | ◇ UNVERIFIED |
| MWMontana Woodworks, INC. | Rexford | MT | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MGMontola Growers INC | Culbertson | MT | Food Manufacturing311223 | — | ◇ UNVERIFIED |
| MCMountain Colors Inc. | Corvallis | MT | Textile Mills313110 | — | ◇ UNVERIFIED |
| MDMountain Dye Studio, LLC | Belgrade | MT | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| MEMountain Engraving, LLC | Columbia Falls | MT | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MHMountain High Woodworks, INC. | Bozeman | MT | Machinery Manufacturing333210 | — | ◇ UNVERIFIED |
| MMMountain Meadows Pet Products | Lewistown | MT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MWMountain West | Columbia Falls | MT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| MWMountain West Products, LLC | Superior | MT | Machinery Manufacturing333210 | — | ◇ UNVERIFIED |
| MAMr Asphalt, INC. | Corvallis | MT | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MTMse Technology Application | Butte | MT | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| MCMT Canning Co | Livingston | MT | Food Manufacturing311422 | — | ◇ UNVERIFIED |
| MTMt Tractors INC. | Stevensville | MT | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| MPMyrstol Post & Pole Company | Clyde Park | MT | Machinery Manufacturing333210 | — | ◇ UNVERIFIED |
| NANaked Acres | Glasgow | MT | Textile Mills313220 | — | ◇ UNVERIFIED |
| NBNBC Billings LLC | Billings | MT | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| NCNellis Custom Woodworks, LLC | Manhattan | MT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| NCNicholas Creek | Laurel | MT | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| NNomadGCS | Columbia Falls | MT | Computer and Electronic Product Manufacturing334220 | — | ◇ UNVERIFIED |
| NMNoreen Manufacturing | Belgrade | MT | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NCNorm's Custom Woodcraft | Chester | MT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| NFNorth Fork Precision LLC | Laurel | MT | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| NFNorth Fork Precision LLC | Broadus | MT | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| NPNorth Peak Cabinets LLC | Pinesdale | MT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| NWNorth Western General Contractors, LLC | Polson | MT | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| NSNorthwest Short Line, LLC | Hamilton | MT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| NFNwpmg00002 Former Texaco Sunburst Works | Sunburst | MT | Petroleum and Coal Products Manufacturing324110 | — | ◇ UNVERIFIED |
| NWN W Swartz Company, INC. | Gallatin Gateway | MT | Wood Product Manufacturing321214 | — | ◇ UNVERIFIED |
| OCOak Creations, INC. | Columbus | MT | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
