| CMCharger Manufacturing Formerly Maryco Mfg., INC. | Clayton | — | ◇ UNVERIFIED |
| CCinao | Cincinnati | — | ◇ UNVERIFIED |
| CCinao | Springfield | — | ◇ UNVERIFIED |
| CCinao | Fairfield | — | ◇ UNVERIFIED |
| CFCincinnati Fan and Ventilator Company | Mason | — | ◇ UNVERIFIED |
| CDCitadel Development, LLC | Mansfield | — | ◇ UNVERIFIED |
| COCity of Cleve Crown Water Treatment Plt (1318612482) | Westlake | — | ◇ UNVERIFIED |
| CICNC Industrial, LLC | Dayton | — | ◇ UNVERIFIED |
| CICNC Industrial, LLC | Centerville | — | ◇ UNVERIFIED |
| CACoal Auger Pro | Carrollton | — | ◇ UNVERIFIED |
| CICoilplus, INC. | Piqua | — | ◇ UNVERIFIED |
| CMColumbus Mckinnon Corporation | Lisbon | — | ◇ UNVERIFIED |
| CTCooper & Turner Mfg INC | Orwell | — | ◇ UNVERIFIED |
| CCCPI Capital LLC | North Royalton | — | ◇ UNVERIFIED |
| CLCsafe, LLC | Moraine | — | ◇ UNVERIFIED |
| CWC. W. Wood Machinery, INC. | Cincinnati | — | ◇ UNVERIFIED |
| DCData Cooling Technologies (1667080058) | Streetsboro | — | ◇ UNVERIFIED |
| DRDavid Round CO. | Streetsboro | — | ◇ UNVERIFIED |
| DFDefcon Force, LLC | Moscow | — | ◇ UNVERIFIED |
| DCDemag Cranes and Components CORP. (1318535255) | Solon | — | ◇ UNVERIFIED |
| DGDennis Group | Minster | — | ◇ UNVERIFIED |
| DIDickson Industrial Park, INC. | Newark | — | ◇ UNVERIFIED |
| DGDie Guys, Inc. | Medina | — | ◇ UNVERIFIED |
| DLDimensiontek LLC | Columbus | — | ◇ UNVERIFIED |
| DBDixon & Birchfield, LLC | Grove City | — | ◇ UNVERIFIED |
| DLDmax LTD | Brookville | — | ◇ UNVERIFIED |
| DHDonevone Holdings LLC | Cincinnati | — | ◇ UNVERIFIED |
| DRDowntime Rebuild LLC | Cincinnati | — | ◇ UNVERIFIED |
 Dragolic Industries, Inc. | Cleveland | — | ◇ UNVERIFIED |
| ETEcho Therm, LLC | Springfield | — | ◇ UNVERIFIED |
| ECEcu Corporation | Cincinnati | — | ◇ UNVERIFIED |
| EIEM Industries LLC | Cleveland | — | ◇ UNVERIFIED |
| EPEngineered Plastic Components, INC. | Lebanon | — | ◇ UNVERIFIED |
| EMEquipment Manufacturers International, Inc. | Cleveland | — | ◇ UNVERIFIED |
| EUEuclid Universal Corporation | Solon | — | ◇ UNVERIFIED |
| ETEvertz Technology Services | Middletown | — | ◇ UNVERIFIED |
| EWEvoqua Water Technologies LLC | Groveport | — | ◇ UNVERIFIED |
| FIFabco, INC. | Findlay | — | ◇ UNVERIFIED |
| FWFab-rite Welding & Design, LLC | Waynesburg | — | ◇ UNVERIFIED |
 Fineline Graphics, INC. | Akron | — | ◇ UNVERIFIED |
| FSFirestone Sheet Metal INC. | Salem | — | ◇ UNVERIFIED |
| FEFitzpatrick Enterprises INC. | Groveport | — | ◇ UNVERIFIED |
| FPFluid Process Automation, LLC | Salem | — | ◇ UNVERIFIED |
| FHFourman's Heating & Cooling | Greenville | — | ◇ UNVERIFIED |
| FPFrato Products INC. | Fairport Harbor | — | ◇ UNVERIFIED |
| FIFrontline International, INC. | Cuyahoga Falls | — | ◇ UNVERIFIED |
| GIGantrex, INC | Sidney | — | ◇ UNVERIFIED |
| GSGarment Specialties, LLC | Twinsburg | — | ◇ UNVERIFIED |
| GIGemini Industrial Machine Group, LLC | New Philadelphia | — | ◇ UNVERIFIED |
| GRGemini Realty Holdings, LLC | New Philadelphia | — | ◇ UNVERIFIED |
