| KWKemira Water Solutions INC | East Chicago | IN | Chemical Manufacturing325131 | 1-19 | ◐ LIKELY ACTIVE |
| KMKewanna Metal Specialties INC | Kewanna | IN | Fabricated Metal Product Manufacturing332439 | 20-99 | ◐ LIKELY ACTIVE |
| KRKeystone Recreational Vehicle Company | Goshen | IN | Transportation Equipment Manufacturing336214 | 100-499 | ◐ LIKELY ACTIVE |
| KWKoetter Woodworking Incorporated | Borden | IN | Wood Product Manufacturing321918 | 100-499 | ◐ LIKELY ACTIVE |
| LVLafayette Venetian Blind | West Lafayette | IN | Furniture and Related Product Manufacturing337920 | 100-499 | ◐ LIKELY ACTIVE |
Lagrange Products, INC. | Fremont | IN | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| LILakepark Industries of Indiana | Shipshewana | IN | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| LPLci Plant 45 | Goshen | IN | Fabricated Metal Product Manufacturing332312 | 500+ | ◐ LIKELY ACTIVE |
| LEL. E. Johnson Products INC. | Elkhart | IN | Fabricated Metal Product Manufacturing332510 | 100-499 | ◐ LIKELY ACTIVE |
L & P Manufacturing Company | Jonesville | IN | Fabricated Metal Product Manufacturing332721 | 1-19 | ◐ LIKELY ACTIVE |
| LOLucas Oil Products INC | Corydon | IN | Petroleum and Coal Products Manufacturing324191 | 100-499 | ◐ LIKELY ACTIVE |
| MMMac Machine & Metal Works INC | Connersville | IN | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| MCMadison-kipp Corporation | Richmond | IN | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| MFMahoney Foundries | Kendallville | IN | Primary Metal Manufacturing331524 | 100-499 | ◐ LIKELY ACTIVE |
| MYMartin Yale Industries | Wabash | IN | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| MMMaster Manufacturing Company, INC. | Evansville | IN | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| MCMicrometl Corporation | Indianapolis | IN | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| MRMid-states Rubber Products, INC. | Princeton | IN | Plastics and Rubber Products Manufacturing326291 | 20-99 | ◐ LIKELY ACTIVE |
| MDModern Door CORP | Walkerton | IN | Fabricated Metal Product Manufacturing332321 | 100-499 | ◐ LIKELY ACTIVE |
| MPMolding Products LLC | South Bend | IN | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| MMMorris Manufacturing & Sales | Brazil | IN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MIMultimatic Indiana Incorporated | Butler | IN | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| MCMuncie Casting CORP | Muncie | IN | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| NINello Industries, LLC | South Bend | IN | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| NSNhk Seating of America | Frankfort | IN | Transportation Equipment Manufacturing336350 | 500+ | ◐ LIKELY ACTIVE |
| NINorthern Indiana Mfg INC | Bourbon | IN | Printing and Related Support Activities323122 | 20-99 | ◐ LIKELY ACTIVE |
| NVNorth Vernon Industry CORP | North Vernon | IN | Primary Metal Manufacturing331511 | 100-499 | ◐ LIKELY ACTIVE |
| NPNtk Precision Axle CORP | Frankfort | IN | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
| NFNucor Fastener Shelbyville | Shelbyville | IN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| OOsborn | Richmond | IN | Chemical Manufacturing325612 | 100-499 | ◐ LIKELY ACTIVE |
| OCOttenweller Company INC | Fort Wayne | IN | Fabricated Metal Product Manufacturing332116 | 100-499 | ◐ LIKELY ACTIVE |
| OCOwens Corning Brookville Roofing & Asphalt LLC | Brookville | IN | Petroleum and Coal Products Manufacturing324122 | 100-499 | ◐ LIKELY ACTIVE |
| PMParagon Medical - Warsaw Finishing Services | Warsaw | IN | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| PCParker-hannifin Corporation | Goshen | IN | Chemical Manufacturing325212 | — | ◐ LIKELY ACTIVE |
| PPiezotechnologies | Indianapolis | IN | Computer and Electronic Product Manufacturing334419 | — | ◐ LIKELY ACTIVE |
| PPPioneer Packaging LLC | Portland | IN | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| PFPlymouth Foundry Incorporated | Plymouth | IN | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| PIPmg Indiana Corporation | Columbus | IN | Fabricated Metal Product Manufacturing332117 | 100-499 | ◐ LIKELY ACTIVE |
Polar King International, INC. | Fort Wayne | IN | Machinery Manufacturing333415 | — | ◐ LIKELY ACTIVE |
| PPPrinting Partners Incorporated | Indianapolis | IN | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| PMProgressive Materials | New Albany | IN | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| PPProtech Powder Coatings | Liberty | IN | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| PIPwi Incorporated | Nappanee | IN | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| RPRaybestos Powertrain, LLC | Sullivan | IN | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| RAReal Alloy Recycling LLC | Wabash | IN | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |
| RMRea Magnet Wire Company INC | Lafayette | IN | Primary Metal Manufacturing331318 | 100-499 | ◐ LIKELY ACTIVE |
| RCRicca Chemical Company LLC | Batesville | IN | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| RMRichardson Molding LLC | Columbus | IN | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| RPRink Printing Company | South Bend | IN | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| RMRoembke Mfg. & Design, Inc. | Ossian | IN | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |