| RBRandall Bearings, INC. | Lima | OH | Fabricated Metal Product Manufacturing332721 | 20-99 | ◐ LIKELY ACTIVE |
| RMRecto Molded Products, Inc. | Cincinnati | OH | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| RIRefcotec INC | Orrville | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| RIReifel Industries INC. | Pioneer | OH | Fabricated Metal Product Manufacturing332812 | 100-499 | ◐ LIKELY ACTIVE |
| RIRepacorp, INC. | Tipp City | OH | Printing and Related Support Activities323111 | 100-499 | ◐ LIKELY ACTIVE |
| RPRepublic Powdered Metals INC | Medina | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| RSRepublic Steel - Canton Facility | Canton | OH | Nonmetallic Mineral Product Manufacturing327992 | 20-99 | ◐ LIKELY ACTIVE |
| RMRhodes Manufacturing, LLC | Somerset | OH | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| RTRidge Tool CO | Elyria | OH | Fabricated Metal Product Manufacturing332116 | 500+ | ◐ LIKELY ACTIVE |
| RPRiker Products | Toledo | OH | Fabricated Metal Product Manufacturing332996 | 100-499 | ◐ LIKELY ACTIVE |
| RERimer Enterprises INC | Waterville | OH | Primary Metal Manufacturing331512 | 20-99 | ◐ LIKELY ACTIVE |
| RMRochester Manufacturing | Wellington | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| RIRogers Industrial Products, INC. | Akron | OH | Plastics and Rubber Products Manufacturing326211 | 20-99 | ◐ LIKELY ACTIVE |
| RCRothenbuhler Cheesemakers INC | Middlefield | OH | Food Manufacturing311513 | 20-99 | ◐ LIKELY ACTIVE |
| RBRoyal Building Products INC | Columbus | OH | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| RHRyder Heil Bronze INC | Bucyrus | OH | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| SISancast INC | Coshocton | OH | Primary Metal Manufacturing331511 | 20-99 | ◐ LIKELY ACTIVE |
| SSSchrock Structures INC | Massillon | OH | Wood Product Manufacturing321992 | 20-99 | ◐ LIKELY ACTIVE |
| SCScotts CO | Marysville | OH | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| SMScreen Machine Industries LLC | Pataskala | OH | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| SCShelby Company | Westlake | OH | Paper Manufacturing322212 | 20-99 | ◐ LIKELY ACTIVE |
| SCShepherd Chemical CO (1431370150) | Norwood | OH | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| SCSherwin-williams CO | Bedford Heights | OH | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| SPSkybox Packaging, LLC | Mansfield | OH | Paper Manufacturing322211 | 100-499 | ◐ LIKELY ACTIVE |
| SUSmithers-oasis U.s.a. (1667040037) | Kent | OH | Plastics and Rubber Products Manufacturing326140 | 20-99 | ◐ LIKELY ACTIVE |
| SBSonder Brewing, LLC | Mason | OH | Beverage and Tobacco Product Manufacturing312130 | 20-99 | ◐ LIKELY ACTIVE |
| SMSonoco Metal Packaging, LLC - Warner Road (1576051610) | Canton | OH | Fabricated Metal Product Manufacturing332431 | 100-499 | ◐ LIKELY ACTIVE |
| SCSpangler Candy CO | Bryan | OH | Food Manufacturing311340 | 100-499 | ◐ LIKELY ACTIVE |
| SMSpectra-Tech Manufacturing, Inc. | Batavia | OH | Computer and Electronic Product Manufacturing334418 | 20-99 | ◐ LIKELY ACTIVE |
| SOSri Ohio INC. | Lancaster | OH | Printing and Related Support Activities323110 | 100-499 | ◐ LIKELY ACTIVE |
| SEStanley Electric U.S Co Inc - ALP | London | OH | Transportation Equipment Manufacturing336111 | 500+ | ◐ LIKELY ACTIVE |
| SEStar Engineering LLC | New Lexington | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SEStar Extruded Shapes | Canfield | OH | Primary Metal Manufacturing331314 | 100-499 | ◐ LIKELY ACTIVE |
| SOStar of the West Milling Company | Willard | OH | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
| SESteere Enterprises INC | Tallmadge | OH | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| SIStewart Industries INC | Cincinnati | OH | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| SMStillwater Machining | Troy | OH | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SPStp Products Manufacturing CO | Painesville | OH | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
Sun Chemical CORP Amelia Plant | Amelia | OH | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
| SFSunrise Foods, Inc. | Columbus | OH | Food Manufacturing311612 | 1-19 | ◐ LIKELY ACTIVE |
| SESunstar Engineering of Americas INC | Springboro | OH | Chemical Manufacturing325520 | 100-499 | ◐ LIKELY ACTIVE |
| SISuperb Industries INC | Sugarcreek | OH | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| SCSuperior Clay CORP | Uhrichsville | OH | Nonmetallic Mineral Product Manufacturing327120 | 20-99 | ◐ LIKELY ACTIVE |
| SPSuperior Products INC | Brooklyn | OH | Fabricated Metal Product Manufacturing332721 | — | ◐ LIKELY ACTIVE |
| TCTaiho Corporation of America | Tiffin | OH | Transportation Equipment Manufacturing336310 | 100-499 | ◐ LIKELY ACTIVE |
| TMTaylor Metal Products | Mansfield | OH | Fabricated Metal Product Manufacturing332116 | 100-499 | ◐ LIKELY ACTIVE |
| TITech-med, INC. | Euclid | OH | Transportation Equipment Manufacturing336413 | 1-19 | ◐ LIKELY ACTIVE |
| TLTencom Ltd | Holland | OH | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| TRTerminal Ready Mix INC | Lorain | OH | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| TTTfo Tech CO LTD | Jeffersonville | OH | Fabricated Metal Product Manufacturing332111 | 100-499 | ◐ LIKELY ACTIVE |