| GAGrimes Aerospace Company | Urbana | — | ◐ LIKELY ACTIVE |
| HSHanon Systems Usa, LLC | Carey | 100–499 | ◐ LIKELY ACTIVE |
| HTHeritage Truck Equipment | Hartville | 100–499 | ◐ LIKELY ACTIVE |
| HAHitachi Astemo Americas, INC. | Sunbury | — | ◐ LIKELY ACTIVE |
| HMHKK Machining Company | West Unity | 1–19 | ◐ LIKELY ACTIVE |
| HDHonda Dev. & Mfg. of America, Llc, East Liberty Plant (0146000117) | East Liberty | — | ◐ LIKELY ACTIVE |
| HEHorton Emergency Vehicles CO | Grove City | 100–499 | ◐ LIKELY ACTIVE |
| IBImasen Bucyrus Technology Inc, | Bucyrus | 100–499 | ◐ LIKELY ACTIVE |
| ICIntegris Composites, INC. | Hebron | 100–499 | ◐ LIKELY ACTIVE |
| JEJr Engineering | Barberton | 20–99 | ◐ LIKELY ACTIVE |
| JWJr Wheel | Norton | 100–499 | ◐ LIKELY ACTIVE |
| KAKwd Aircraft Support Equipment LLC | Solon | 20–99 | ◐ LIKELY ACTIVE |
| MIMillat Industries, CORP. | Kettering | 100–499 | ◐ LIKELY ACTIVE |
| NFNational Fleet Services of Ohio | Avon Lake | 100–499 | ◐ LIKELY ACTIVE |
| NSNew Sabina Industries Incorporated | Sabina | 100–499 | ◐ LIKELY ACTIVE |
| NCNSI Crankshaft | Fostoria | 20–99 | ◐ LIKELY ACTIVE |
| PMPacific Manufacturing Ohio INC | Fairfield | 500+ | ◐ LIKELY ACTIVE |
| PVPleasant Valley Teardrop Trailers, LLC | Sugarcreek | 100–499 | ◐ LIKELY ACTIVE |
| PAPowers and Sons | Montpelier | 100–499 | ◐ LIKELY ACTIVE |
| RARoki America CO INC | Findlay | 100–499 | ◐ LIKELY ACTIVE |
| SESignature Engines INC | Cincinnati | 1–19 | ◐ LIKELY ACTIVE |
| STSK Tech Inc. | Englewood | 20–99 | ◐ LIKELY ACTIVE |
| SDSuperior Die Tool and Machine CO | Columbus | 20–99 | ◐ LIKELY ACTIVE |
| SPSuperior Production LLC | Columbus | 100–499 | ◐ LIKELY ACTIVE |
| TTect | Euclid | — | ◐ LIKELY ACTIVE |
| TATower Automotive Prods CO INC | Bluffton | 100–499 | ◐ LIKELY ACTIVE |
| TCTruck Cab Manufacturers INC | Cincinnati | 20–99 | ◐ LIKELY ACTIVE |
| VCVarbros CORP | Brook Park | 20–99 | ◐ LIKELY ACTIVE |
| VSVehtek Systems INC | Bowling Green | 500+ | ◐ LIKELY ACTIVE |
| VIVitatoe Industries | Chillicothe | 100–499 | ◐ LIKELY ACTIVE |
Workhorse Group INC. | Sharonville | 100–499 | ◐ LIKELY ACTIVE |
| ASAmerican Showa INC Blanchester Plant | Blanchester | — | ◐ LIKELY ACTIVE |
| AAA.r.e. Accessories, LLC - Mount Eaton Facility | Mount Eaton | — | ◐ LIKELY ACTIVE |
| CMCheckmate Marine Power INC. (0317010112) | Bucyrus | — | ◐ LIKELY ACTIVE |
| DDDana Driveshaft Manufacturing, LLC (0302020128) | Lima | — | ◐ LIKELY ACTIVE |
| DEDawn Enterprises, INC. (1318578397) | Valley View | — | ◐ LIKELY ACTIVE |
| FIFindlay Inds INC Molded Prods Div | Findlay | — | ◐ LIKELY ACTIVE |
| FMFord Motor Company (1431140861) | Sharonville | — | ◐ LIKELY ACTIVE |
| FAF&p America Mfg., INC. (0855140460) | Troy | — | ◐ LIKELY ACTIVE |
| GAGe Aerospace Additive Technology Center | West Chester | — | ◐ LIKELY ACTIVE |
| GMGeneral Motors LLC Parma Plant | Parma | — | ◐ LIKELY ACTIVE |
| GMGeneral Motors LLC - Toledo (0448010404) | Toledo | — | ◐ LIKELY ACTIVE |
| GTGt Technologies | Defiance | — | ◐ LIKELY ACTIVE |
| HTHendrickson Truck Suspension Systems | Hebron | — | ◐ LIKELY ACTIVE |
| HDHonda Development and Manufacturing of America * | Anna | — | ◐ LIKELY ACTIVE |
| HTHonda Transmission Manufacturing of America INC | Russells Point | — | ◐ LIKELY ACTIVE |
| JSJoint Systems Manufacturing Center (0302020027) | Lima | — | ◐ LIKELY ACTIVE |
| KTKenworth Truck CO | Chillicothe | — | ◐ LIKELY ACTIVE |
| KIKilar INC | Hubbard | 1–19 | ◐ LIKELY ACTIVE |
| LULuk USA LLC | Wooster | — | ◐ LIKELY ACTIVE |