| JIJefferson Industries | West Jefferson | OH | Transportation Equipment Manufacturing336111 | 500+ | ◐ LIKELY ACTIVE |
| JAJoby Aviation Dayton | Vandalia | OH | Transportation Equipment Manufacturing336411 | 1-19 | ◐ LIKELY ACTIVE |
| KTKuka Toledo Production Operations | Toledo | OH | Transportation Equipment Manufacturing336320 | — | ◐ LIKELY ACTIVE |
| MLMac Ltt, INC. | Kent | OH | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| MMMAC Manufacturing, Inc. | Salem | OH | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| MWMAC Waste Trailer, Inc | Alliance | OH | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| MIMarion Industries INC. | Marion | OH | Electrical Equipment, Appliance & Component Manufacturing335220 | 500+ | ◐ LIKELY ACTIVE |
| MIMcginnis, INC. | South Point | OH | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |
| MAMeggitt Aircraft Braking Systems Corporation | Akron | OH | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| MWMid West Fabricating - Amanda | Amanda | OH | Fabricated Metal Product Manufacturing332618 | 100-499 | ◐ LIKELY ACTIVE |
| MIMilark Industries, INC. | Mansfield | OH | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| MNMobis North America, LLC | Toledo | OH | Transportation Equipment Manufacturing336110 | 100-499 | ◐ LIKELY ACTIVE |
| NINavarre Industries | Navarre | OH | Food Manufacturing311812 | 100-499 | ◐ LIKELY ACTIVE |
| NINhvs International INC. | Mentor | OH | Machinery Manufacturing333517 | 100-499 | ◐ LIKELY ACTIVE |
| OFOerlikon Friction Systems (us) INC. | Dayton | OH | Transportation Equipment Manufacturing336350 | 20-99 | ◐ LIKELY ACTIVE |
| OAOhio Air National Guard 179 Airlift Group | Mansfield | OH | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| PIPako INC | Mentor | OH | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| PHParker Hannifin CORP | Elyria | OH | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| PCPenn-ohio Coal CO - Crooked Run Facility | New Philadelphia | OH | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| PIPentaflex, INC. | Springfield | OH | Machinery Manufacturing333513 | 20-99 | ◐ LIKELY ACTIVE |
| PAPowers and Sons | Montpelier | OH | Transportation Equipment Manufacturing336330 | 100-499 | ◐ LIKELY ACTIVE |
| PAPrecision Aero Company I LLC | Troy | OH | Computer and Electronic Product Manufacturing334511 | — | ◐ LIKELY ACTIVE |
| STSchodorf Truck Body & Equipment CO | Columbus | OH | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| SAStahl, a Scott Fetzer Co-stahl/scott Fetzer CO | Wooster | OH | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| SEStanley Electric U.S Co Inc - ALP | London | OH | Transportation Equipment Manufacturing336111 | 500+ | ◐ LIKELY ACTIVE |
Superior Marine Ways - South Point | South Point | OH | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |
| TCTaiho Corporation of America | Tiffin | OH | Transportation Equipment Manufacturing336310 | 100-499 | ◐ LIKELY ACTIVE |
| TSTakumi Stamping INC. | Fairfield | OH | Transportation Equipment Manufacturing336370 | 100-499 | ◐ LIKELY ACTIVE |
| TITech-med, INC. | Euclid | OH | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| TSToledo Supplier Park - Rolling Chassis (0448011729) | Toledo | OH | Transportation Equipment Manufacturing336110 | — | ◐ LIKELY ACTIVE |
| TTToledo Tool and Die Alexis | Toledo | OH | Fabricated Metal Product Manufacturing332116 | 100-499 | ◐ LIKELY ACTIVE |
| TIToth Industries, INC. | Toledo | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| TCTrailer Components Manufacturing - 8200 | Mentor | OH | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| UIUnison Industries, Plant 1 (0829710096) | Dayton | OH | Transportation Equipment Manufacturing336412 | — | ◐ LIKELY ACTIVE |
| VCVarbros CORP | Brookpark | OH | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| CSCooper Standard Automotive INC | New Lexington | OH | Primary Metal Manufacturing331210 | — | ◐ LIKELY ACTIVE |
| HPHartzell Propeller: Hartzell Airport Site | Piqua | OH | Transportation Equipment Manufacturing336413 | — | ◐ LIKELY ACTIVE |
| KHKelsey Hayes Landfill | Portsmouth | OH | Transportation Equipment Manufacturing336000 | — | ◐ LIKELY ACTIVE |
| MIMoritz International INC. - Illinois Avenue Plant (0370012053) | Mansfield | OH | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| PMPerformance Manufacturing Center (0180010413) | Marysville | OH | Transportation Equipment Manufacturing336110 | — | ◐ LIKELY ACTIVE |
Superior Marine Ways INC - Proctorville (0744000186) | Proctorville | OH | Transportation Equipment Manufacturing336611 | — | ◐ LIKELY ACTIVE |
| ADAirstream Div of Beatrice Foods | Jackson Center | OH | Transportation Equipment Manufacturing336214 | — | ◇ UNVERIFIED |
| AAAlcoa Automotive Structures | Northwood | OH | Transportation Equipment Manufacturing336000 | — | ◇ UNVERIFIED |
| AIAmtex INC | Lebanon | OH | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| AMAnchor Manufacturing Group, INC. | Cleveland | OH | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| AIAot INC (0812100480) | Springfield | OH | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| APAptiv PLC | Warren | OH | Transportation Equipment Manufacturing336320 | — | ◇ UNVERIFIED |
| AMAy Manufacturing LTD | Columbus | OH | Transportation Equipment Manufacturing336399 | — | ◇ UNVERIFIED |
| BMBaja Marine CORP | Bucyrus | OH | Transportation Equipment Manufacturing336612 | — | ◇ UNVERIFIED |
| BHBellaire Harbor Service LLC | Bellaire | OH | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |