Malco Products, Inc. Alliance | Alliance | OH | Chemical Manufacturing325612 | 20-99 | ◐ LIKELY ACTIVE |
| MManufacturing | Streetsboro | OH | Chemical Manufacturing325620 | 20-99 | ◐ LIKELY ACTIVE |
| MDMasters Drug Company, INC. | Mason | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| MCMaumee Cob Pack | Maumee | OH | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| MDMaumee DG Pilot Plant | Maumee | OH | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| MLMaumee Large Pack | Maumee | OH | Chemical Manufacturing325314 | 20-99 | ◐ LIKELY ACTIVE |
| MGM.c.k. Green Composite Enterprise Corporation | Greenville | OH | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| MTMEDAL Tech | North Baltimore | OH | Chemical Manufacturing325211 | 1-19 | ◐ LIKELY ACTIVE |
| MMedina | Medina | OH | Chemical Manufacturing325520 | 100-499 | ◐ LIKELY ACTIVE |
| MSMexichem Specialty Resins Inc. Avon lake | Avon Lake | OH | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| MAMichelman AMCC | Cincinnati | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| MKMichelman Kemper | Cincinnati | OH | Chemical Manufacturing325510 | 1-19 | ◐ LIKELY ACTIVE |
| NCNA Chagrin Falls | Chagrin Falls | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| NRNational Resilience, INC | West Chester | OH | Chemical Manufacturing325412 | 500+ | ◐ LIKELY ACTIVE |
| NFNexpera - Fort Hill Plant | North Bend | OH | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| NENext Energy Fuels LLC | Cincinnati | OH | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| NRNorth Royalton | North Royalton | OH | Chemical Manufacturing325120 | 20-99 | ◐ LIKELY ACTIVE |
| NNutrien | Harrison | OH | Chemical Manufacturing325312 | 1-19 | ◐ LIKELY ACTIVE |
| NLNutrien LNO | Lima | OH | Chemical Manufacturing325311 | 100-499 | ◐ LIKELY ACTIVE |
| OLOakwood Laboratories LLC - Solon Manufacturing Facility | Solon | OH | Chemical Manufacturing325412 | 20-99 | ◐ LIKELY ACTIVE |
| OCOatey Co - Cleveland Manufacturing | Cleveland | OH | Chemical Manufacturing325520 | 100-499 | ◐ LIKELY ACTIVE |
| OEOctal Extrusions | Cincinnati | OH | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| OMOhio Mulch Supply | Columbus, OH | OH | Chemical Manufacturing325314 | 100-499 | ◐ LIKELY ACTIVE |
| OFOld Fort Plant | Old Fort | OH | Chemical Manufacturing325180 | 100-499 | ◐ LIKELY ACTIVE |
| PCPeter Cremer North America - Bottling Facility | Cincinnati | OH | Chemical Manufacturing325613 | 20-99 | ◐ LIKELY ACTIVE |
| PCPeter Cremer North America - East Warehouse | Cincinnati | OH | Chemical Manufacturing325613 | 20-99 | ◐ LIKELY ACTIVE |
| PRPhilpott Rubber LLC | Brunswick | OH | Chemical Manufacturing325212 | — | ◐ LIKELY ACTIVE |
| PCPilot Chemical Company | Lockland | OH | Chemical Manufacturing325613 | 20-99 | ◐ LIKELY ACTIVE |
| PRPiping Rock Health Products Inc 630 | Streetsboro | OH | Chemical Manufacturing325412 | 500+ | ◐ LIKELY ACTIVE |
| PRPiping Rock Health Products Inc 777 | Aurora | OH | Chemical Manufacturing325412 | 500+ | ◐ LIKELY ACTIVE |
| PSPolymer Solutions Group | Cleveland | OH | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| PLPrasco, LLC | Mason | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| PPPriam Polymers | Troy | OH | Chemical Manufacturing325110 | 20-99 | ◐ LIKELY ACTIVE |
| PPrimient | Dayton | OH | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| PPPrism Powder Coatings | Brunswick | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| PGProcter & Gamble | Lima | OH | Chemical Manufacturing325611 | 500+ | ◐ LIKELY ACTIVE |
| PTPureCycle Technologies Inc | Ironton | OH | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| QUQEMETICA US Silica - Barberton | Barberton | OH | Chemical Manufacturing325180 | 1-19 | ◐ LIKELY ACTIVE |
| QCQnity Cleveland Laird Plant | Cleveland | OH | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| QDQuidelOrtho Diagnostic Hybrids | Athens | OH | Chemical Manufacturing325413 | 100-499 | ◐ LIKELY ACTIVE |
| RDRed Diamond Plant | McArthur | OH | Chemical Manufacturing325920 | 100-499 | ◐ LIKELY ACTIVE |
| RDRed Diamond Plant | Mc Arthur | OH | Chemical Manufacturing325920 | 100-499 | ◐ LIKELY ACTIVE |
| RLRegeneir LLC | Powell | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| ROResearch Organics LLC | Cleveland | OH | Chemical Manufacturing325199 | 20-99 | ◐ LIKELY ACTIVE |
| RPReturn Polymers | Ashland | OH | Chemical Manufacturing325991 | 100-499 | ◐ LIKELY ACTIVE |
| RCRTP Company - Gahanna | Gahanna | OH | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |
| RIRubex Inc | Grove City | OH | Chemical Manufacturing325520 | 20-99 | ◐ LIKELY ACTIVE |
| SFSandusky Facility | Sandusky | OH | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| SDSchaaf Drugs, LLC | Lima | OH | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| SScp | Cuyahoga Falls | OH | Chemical Manufacturing325991 | 20-99 | ◐ LIKELY ACTIVE |