| NUNox US | Fostoria | — | ◇ UNVERIFIED |
| NPNuvo Packaging, LLC | Columbus | — | ◇ UNVERIFIED |
| OEOhio Elastomers Manufacturing Corporation | Perry | — | ◇ UNVERIFIED |
| OMOhio Machined Products, Inc. | Holgate | — | ◇ UNVERIFIED |
| OIO.k. Industries, INC. | Fostoria | — | ◇ UNVERIFIED |
| OMOldcastle Middlefield | Middlefield | — | ◇ UNVERIFIED |
| OSOperational Support Services LLC | Findlay | — | ◇ UNVERIFIED |
| OPOptimum Plastics INC. | Delaware | — | ◇ UNVERIFIED |
| OCOrbis Corporation | Mentor | — | ◇ UNVERIFIED |
| PDPackage Design and Mfg | Independence | — | ◇ UNVERIFIED |
| PDPackage Design and Mfg | Cincinnati | — | ◇ UNVERIFIED |
| PIPac-tec INC | Heath | — | ◇ UNVERIFIED |
| PWPac Worldwide | Middletown | — | ◇ UNVERIFIED |
| PMParamont Machine Company, LLC | New Philadelphia | — | ◇ UNVERIFIED |
| PFPentair Filter Solutions | Chardon | — | ◇ UNVERIFIED |
| PWPentair Water Purification (0228000101) | Chardon | — | ◇ UNVERIFIED |
| PEPerformance Elastomers INC. | Ravenna | — | ◇ UNVERIFIED |
| PFPerry Fiberglas Products, Inc. | Elyria | — | ◇ UNVERIFIED |
| PFPerry Fiberglass Products, INC. (0247042017) | Elyria | — | ◇ UNVERIFIED |
| PMPfb Manufacturing, LLC (1483060393) | Lebanon | — | ◇ UNVERIFIED |
| PPPilot Plastics INC | Peninsula | — | ◇ UNVERIFIED |
| PCPioneer Custom Molding, INC. | Pioneer | — | ◇ UNVERIFIED |
 Pioneer Plastics Corporation | Akron | — | ◇ UNVERIFIED |
| PCPlastic Components INC. | North Ridgeville | — | ◇ UNVERIFIED |
| PSPlastic Systems, LLC | Kenton | — | ◇ UNVERIFIED |
| PHPlastipak Holdings INC. | Medina | — | ◇ UNVERIFIED |
| PPPlastipak Packaging INC. | Jackson Center | — | ◇ UNVERIFIED |
| PCPlasto-tech Corporation | Elyria | — | ◇ UNVERIFIED |
| PIPlextrusions, Inc | North Ridgeville | — | ◇ UNVERIFIED |
| PPPodnar Plastics | Kent | — | ◇ UNVERIFIED |
| PCPolychem Corporation | Clyde | — | ◇ UNVERIFIED |
| PCPolychem Corporation | Mentor | — | ◇ UNVERIFIED |
| PTPolymer Technologies and Services, INC. | Heath | — | ◇ UNVERIFIED |
| PPPossible Plastics, INC. | Grove City | — | ◇ UNVERIFIED |
| PAPpg Advanced Surface Technologies, LLC (0145000593) | New Albany | — | ◇ UNVERIFIED |
| PCPrecision Custom Products, INC. | De Graff | — | ◇ UNVERIFIED |
| PCPreferred Compounding CORP. | Wadsworth | — | ◇ UNVERIFIED |
| PBPremier Bandag 5, INC. | Milford | — | ◇ UNVERIFIED |
| PProampac (1431420497) | Cincinnati | — | ◇ UNVERIFIED |
| PFProgressive Foam Technologies (0679000327) | Gnadenhutten | — | ◇ UNVERIFIED |
| PMProgressive Molding Technologies Inc. | Medina | — | ◇ UNVERIFIED |
| QCQueen City Foam, Incorporated (1431004632) | Cincinnati | — | ◇ UNVERIFIED |
| QCQueen City Polymers, INC. | West Chester | — | ◇ UNVERIFIED |
| RMResource Material Handling | Burton | — | ◇ UNVERIFIED |
| RCRez-Tech Corporation | Kent | — | ◇ UNVERIFIED |
| RMRg Mold | Holland | — | ◇ UNVERIFIED |
| RLRichard L. Lemmon | Edon | — | ◇ UNVERIFIED |
| RLRJon3, LLC | Blue Ash | — | ◇ UNVERIFIED |
| RDRobin Development Center (0238000164) | Berlin Twp. | — | ◇ UNVERIFIED |
| RRRotadyne Roll Group | Franklin | — | ◇ UNVERIFIED |
