| AMAds Machinery CORP | Warren | OH | Machinery Manufacturing333516 | 1-19 | ◐ LIKELY ACTIVE |
| ATAjax Tocco Magnethermic - N. Canton (1576171949) | North Canton | OH | Machinery Manufacturing333994 | 20-99 | ◐ LIKELY ACTIVE |
| ATAlcon Tool Company | Akron | OH | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| AMAllied Machine & Engineering | Dover | OH | Machinery Manufacturing333515 | 100-499 | ◐ LIKELY ACTIVE |
| AMAllied Machine & Engineering Corporation | Dover | OH | Machinery Manufacturing333515 | 100-499 | ◐ LIKELY ACTIVE |
| AIAmg Industries INC | Mount Vernon | OH | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| AMArnold Machine INC | Tiffin | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| AMAthens Mold & Machine | Athens | OH | Machinery Manufacturing333511 | 20-99 | ◐ LIKELY ACTIVE |
| ATAtlantic Tool & Die Strongsville | Strongsville | OH | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
B & B Gear and Machine Company, INC. | New Lebanon | OH | Machinery Manufacturing333517 | 1-19 | ◐ LIKELY ACTIVE |
| BKB K Tool and Design INC | Kalida | OH | Machinery Manufacturing333514 | 100-499 | ◐ LIKELY ACTIVE |
| CGCage Gear and Machine LLC | Canton | OH | Machinery Manufacturing333612 | 20-99 | ◐ LIKELY ACTIVE |
| CICorrotec Incorporated | Springfield | OH | Machinery Manufacturing333248 | 20-99 | ◐ LIKELY ACTIVE |
| CACrawford Ae Llc, Dba Air Enterprises | Akron | OH | Machinery Manufacturing333412 | 100-499 | ◐ LIKELY ACTIVE |
| CECrown Equipment CORP | Celina | OH | Machinery Manufacturing333924 | 500+ | ◐ LIKELY ACTIVE |
| DPDanfoss Power Solutions Ii LLC | Cleveland | OH | Machinery Manufacturing333613 | 20-99 | ◐ LIKELY ACTIVE |
| DGDayton-phoenix Group INC | Dayton | OH | Machinery Manufacturing333513 | 100-499 | ◐ LIKELY ACTIVE |
| DEDillin Engineered Systems CORP. | Perrysburg | OH | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| DLDmax LTD | Moraine | OH | Machinery Manufacturing333618 | 500+ | ◐ LIKELY ACTIVE |
Fecon, LLC | Lebanon | OH | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
| FTF T Precision | Fredericktown | OH | Machinery Manufacturing333612 | 100-499 | ◐ LIKELY ACTIVE |
| GCGraphel Corporation | West Chester | OH | Machinery Manufacturing333999 | 20-99 | ◐ LIKELY ACTIVE |
| KEKaufman Engineered Systems Addition 2025 | Waterville | OH | Machinery Manufacturing333249 | 100-499 | ◐ LIKELY ACTIVE |
| KMKuttler Machine | Minerva | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| KIKyntronics INC | Solon | OH | Machinery Manufacturing333995 | 1-19 | ◐ LIKELY ACTIVE |
| LPLhy Powertrain | Canfield | OH | Machinery Manufacturing333996 | 20-99 | ◐ LIKELY ACTIVE |
| MRMaag Reduction | Kent | OH | Machinery Manufacturing333248 | 20-99 | ◐ LIKELY ACTIVE |
| MEMagnus Engineered Equipment LLC | Willoughby | OH | Chemical Manufacturing325612 | 1-19 | ◐ LIKELY ACTIVE |
| MIMayfran International INC | Cleveland | OH | Machinery Manufacturing333922 | 100-499 | ◐ LIKELY ACTIVE |
| MPMeyer Products LLC (1318001982) | Cleveland | OH | Machinery Manufacturing333120 | 100-499 | ◐ LIKELY ACTIVE |
| MTMorgan Truck Body LLC (0285010292) | Orrville | OH | Machinery Manufacturing333120 | 100-499 | ◐ LIKELY ACTIVE |
| MSMt Systems, INC | Canton | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| OSOhio Steel Industries | Columbus | OH | Machinery Manufacturing333112 | 20-99 | ◐ LIKELY ACTIVE |
| PSPeerless Saw | Groveport | OH | Fabricated Metal Product Manufacturing332216 | 20-99 | ◐ LIKELY ACTIVE |
| PIPentaflex, INC. | Springfield | OH | Machinery Manufacturing333513 | 20-99 | ◐ LIKELY ACTIVE |
| PDProduction Design Services INC | Dayton | OH | Machinery Manufacturing333298 | 100-499 | ◐ LIKELY ACTIVE |
| QIQuickdraft INC | Canton | OH | Machinery Manufacturing333922 | 20-99 | ◐ LIKELY ACTIVE |
| RTRidge Tool CO | Elyria | OH | Fabricated Metal Product Manufacturing332116 | 500+ | ◐ LIKELY ACTIVE |
| SMScreen Machine Industries LLC | Pataskala | OH | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| TLThe Lincoln Electric Company | Cleveland | OH | Machinery Manufacturing333991 | — | ◐ LIKELY ACTIVE |
| TFThermo Fisher Scientific INC | Marietta | OH | Machinery Manufacturing333415 | 100-499 | ◐ LIKELY ACTIVE |
| TTThe Tooling Zone INC | Springboro | OH | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| UAUMD Automated Systems, Inc. | Fredericktown | OH | Machinery Manufacturing333922 | 20-99 | ◐ LIKELY ACTIVE |
| VVVenco Venturo LLC | Cincinnati | OH | Fabricated Metal Product Manufacturing332999 | 20-99 | ◐ LIKELY ACTIVE |
| WMWebster Mfg CO | Tiffin | OH | Fabricated Metal Product Manufacturing332618 | 100-499 | ◐ LIKELY ACTIVE |
| WCWest Carrollton Parchment & Converting INC | West Carrollton | OH | Paper Manufacturing322220 | 20-99 | ◐ LIKELY ACTIVE |
| BSBuckeye State Welding and Fabricating INC | Elyria | OH | Machinery Manufacturing333512 | 1-19 | ◐ LIKELY ACTIVE |
| CGCanton Gear Manufacturing & Designing Co., INC. | Canton | OH | Machinery Manufacturing333612 | 1-19 | ◐ LIKELY ACTIVE |
| DPDayton Progress Corporation | West Carrollton | OH | Machinery Manufacturing333514 | 500+ | ◐ LIKELY ACTIVE |
| DCDupp's CO | Germantown | OH | Machinery Manufacturing333294 | 500+ | ◐ LIKELY ACTIVE |