| LILebanon, IN | Lebanon | IN | Transportation Equipment Manufacturing336330 | 100-499 | ◐ LIKELY ACTIVE |
| LMLeer Midwest | Elkhart | IN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MPMagna Powertrain | Muncie | IN | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| MFMahoney Foundries DBA Ward Corporation | Fort Wayne | IN | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| MManufacturing | Franklin | IN | Transportation Equipment Manufacturing336310 | 20-99 | ◐ LIKELY ACTIVE |
| MGMaster Guard | Veedersburg | IN | Transportation Equipment Manufacturing336370 | 500+ | ◐ LIKELY ACTIVE |
| MHMayco Hartford City | Hartford City | IN | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| MEMc Equipment, LLC | Columbia City | IN | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| MMMetaldyne M & A Bluffton LLC | Bluffton | IN | Transportation Equipment Manufacturing336350 | 100-499 | ◐ LIKELY ACTIVE |
| MAMiasa Automotive LLC. | Yorktown | IN | Transportation Equipment Manufacturing336350 | 20-99 | ◐ LIKELY ACTIVE |
| MTMississippi Tank Company | Vincennes | IN | Transportation Equipment Manufacturing336112 | 20-99 | ◐ LIKELY ACTIVE |
| MOMorgan Olson Plant 6 | Howe | IN | Transportation Equipment Manufacturing336211 | 1-19 | ◐ LIKELY ACTIVE |
| MOMorgan Olson R&D | Wolcottville | IN | Transportation Equipment Manufacturing336211 | 1-19 | ◐ LIKELY ACTIVE |
| MCMORryde - Cooper | Elkhart | IN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MSMORryde - Stainless | Elkhart | IN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MSMORryde - Sterling | Elkhart | IN | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MTMo Trailer Corporation | Bristol | IN | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| MVMount Vernon Land | Mount Vernon | IN | Transportation Equipment Manufacturing336611 | 20-99 | ◐ LIKELY ACTIVE |
| NCNEW-IN Corporate | Columbus | IN | Transportation Equipment Manufacturing336350 | 20-99 | ◐ LIKELY ACTIVE |
| NANoble Auto Accessories & Window Tint INC | Noblesville | IN | Transportation Equipment Manufacturing336211 | — | ▲ REPORTED CLOSED |
| NLNovae LLC | Markle | IN | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| NLNovae LLC | Markle | IN | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| NLNovae LLC | Markle | IN | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| NPNunc Potentia LLC | Whiteland | IN | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| NLNymbis LLC | Bloomington | IN | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| PIPeru IN Locomotive Components | Peru | IN | Transportation Equipment Manufacturing336510 | 100-499 | ◐ LIKELY ACTIVE |
| PUPK U.S.A. Inc | Shelbyville | IN | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| P2Plant 240 | Bristol | IN | Transportation Equipment Manufacturing336213 | 500+ | ◐ LIKELY ACTIVE |
| P5Plant 550 | Elkhart | IN | Transportation Equipment Manufacturing336213 | 500+ | ◐ LIKELY ACTIVE |
| P7Plant 750 | Elkhart | IN | Transportation Equipment Manufacturing336213 | 500+ | ◐ LIKELY ACTIVE |
| P8Plant 831 | Wakarusa | IN | Transportation Equipment Manufacturing336213 | 500+ | ◐ LIKELY ACTIVE |
| P8Plant 850a | Wakarusa | IN | Transportation Equipment Manufacturing336213 | 500+ | ◐ LIKELY ACTIVE |
| PPPlug Power: Lafayette, IN Manufacturing Facility | Lafayette | IN | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| PMPMC Muncie IN Locomotive | Muncie | IN | Transportation Equipment Manufacturing336510 | 500+ | ◐ LIKELY ACTIVE |
Polycraft Products Inc. | Greendale | IN | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| PAPostle Aluminum | Elkhart | IN | Transportation Equipment Manufacturing336213 | 20-99 | ◐ LIKELY ACTIVE |
| PMPowerRail Manufacturing, Inc. | Connersville | IN | Transportation Equipment Manufacturing336510 | 20-99 | ◐ LIKELY ACTIVE |
| PGPraxair GE Technologies | Indianapolis | IN | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| PTPrecision Turbo and Engine | Crown Point | IN | Transportation Equipment Manufacturing336310 | 20-99 | ◐ LIKELY ACTIVE |
| QPQuality Plastics and Engineering Acquisition Corporation | Elkhart | IN | Transportation Equipment Manufacturing336320 | 20-99 | ◐ LIKELY ACTIVE |
| RERamco Engineering, Inc. | Elkhart | IN | Transportation Equipment Manufacturing336390 | 20-99 | ◐ LIKELY ACTIVE |
| RReflex | Elkhart | IN | Transportation Equipment Manufacturing336213 | 100-499 | ◐ LIKELY ACTIVE |
| RTReliable Transmission Service - Midwest, INC | Greenwood | IN | Transportation Equipment Manufacturing336350 | — | ◐ LIKELY ACTIVE |
| RRenegade | Bristol | IN | Transportation Equipment Manufacturing336213 | 100-499 | ◐ LIKELY ACTIVE |
| RBRolls-Royce: Banded Stator | Indianspolis | IN | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| RRRolls Royce: Excellence | Indianapolis | IN | Transportation Equipment Manufacturing336412 | 500+ | ◐ LIKELY ACTIVE |
| RORolls-Royce: On-Wing Care | Indianapolis | IN | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| RSRolls-Royce: SCO | Indianapolis | IN | Transportation Equipment Manufacturing336412 | 20-99 | ◐ LIKELY ACTIVE |
| RRRolls Royce: Victory/TC/OSB | Indianapolis | IN | Transportation Equipment Manufacturing336412 | 100-499 | ◐ LIKELY ACTIVE |
| SService | Wakarusa | IN | Transportation Equipment Manufacturing336213 | 500+ | ◐ LIKELY ACTIVE |