| MCMilestone Contractors LP | Delphi | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors LP | South Bend | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors LP | Indianapolis | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors LP | Richmond | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors LP | Valparaiso | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors, L.p. | Bloomfield | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMilestone Contractors, L.p. | Kentland | IN | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MDMiller Door and Trim, INC. | Goshen | IN | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| MDMiller Door & Trim Incorporated | Goshen | IN | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| MIMiller Industrial | Kokomo | IN | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MPMiller Plating & Metal Finishing LLC | Evansville | IN | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MHMitsubishi Heavy Industries Climate Cont | Franklin | IN | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| MTMitsubishi Turbocharger-engine America | Franklin | IN | Transportation Equipment Manufacturing336310 | — | ◇ UNVERIFIED |
| MWMi Windows & Doors LLC | Brazil | IN | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| MMM & M Fabricators CORP | Elkhart | IN | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
| MIMobel INC | Ferdinand | IN | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MWMobilcraft Wood Products | Elkhart | IN | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| MCModineer Coatings Division South | South Bend | IN | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MMModine Mfg/laporte/pemberville | La Porte | IN | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| MMModine Midwest Incorporated | Indianapolis | IN | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| MCMonaco Coach CORP | Nappanee | IN | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| MCMonogram Conversions, INC. | Nappanee | IN | Transportation Equipment Manufacturing336213 | — | ◇ UNVERIFIED |
| MLMonosol - Laporte Plant | La Porte | IN | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| MWMoore Wallace an Rr Donnelley CO | Angola | IN | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MMMpt Muncie Cowan Road | Muncie | IN | Transportation Equipment Manufacturing336350 | — | ◇ UNVERIFIED |
| MIMti Insulated Products, INC. | Fort Wayne | IN | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| MPMullinix Packaging | Fort Wayne | IN | Plastics and Rubber Products Manufacturing326112 | — | ◇ UNVERIFIED |
| MSMunster Steel Company | Munster | IN | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MWMws Wood Designs | Odon | IN | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| NANapa Auto Parts Machine Shop | Plymouth | IN | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| NONational Office Furniture Distribution C | Santa Claus | IN | Furniture and Related Product Manufacturing337125 | — | ◇ UNVERIFIED |
| NONational Office Furniture (nof) - Santa Claus | Santa Claus | IN | Furniture and Related Product Manufacturing337129 | — | ◇ UNVERIFIED |
| NTNational Tube Form | Ft Wayne | IN | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| NFNature's Fuel | Atwood | IN | Chemical Manufacturing325193 | — | ◇ UNVERIFIED |
| NCNc-m Chassis Systems, LLC | New Castle | IN | Machinery Manufacturing333924 | — | ◇ UNVERIFIED |
 Ncp Coatings, INC. (mishawaka Facility) | Mishawaka | IN | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| NGNelson Global - Fortune Circle | Indianapolis | IN | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| NINeo Industries Indiana INC | Portage | IN | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| NUNestle USA | Anderson | IN | Food Manufacturing311511 | — | ◇ UNVERIFIED |
| NCNew Castle Asbestos Site - Former Firestone Plant | New Castle | IN | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| NPNippon Paint Automotive Americas (npaa) | Hobart | IN | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| NANorth American Refractories (narco) | Gary | IN | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| NBNorthfield Block Company | Indianapolis | IN | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| NLNovae LLC | Elkhart | IN | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| NCNu-wood Company, LLC | Goshen | IN | Paper Manufacturing322223 | — | ◇ UNVERIFIED |
| OBOfs Brands Incorporated Plant 3b | Huntingburg | IN | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| OHOld Hickory Furniture Company | Shelbyville | IN | Furniture and Related Product Manufacturing337121 | — | ◇ UNVERIFIED |
| OJOld Jb LLC | Jeffersonville | IN | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| OFOlympic Fiberglass Industries | Rochester | IN | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| OCOmco Cast Metals, INC. | Winchester | IN | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
