| OSOhio - Superior Diesel | Seville | OH | Machinery Manufacturing333618 | 20-99 | ◐ LIKELY ACTIVE |
| OWOHIO Warehouse Operations | Troy | OH | Machinery Manufacturing333992 | 20-99 | ◐ LIKELY ACTIVE |
| OOlan | Canal Winchester | OH | Machinery Manufacturing333249 | 1-19 | ◐ LIKELY ACTIVE |
| OSOrick Stamping | Elida | OH | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| OOrwell | Orwell | OH | Machinery Manufacturing333515 | 100-499 | ◐ LIKELY ACTIVE |
| OUOSG USA, Inc., Cold Forming Division | Parma | OH | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| PMPalmer Manufacturing & Supply, Inc. | Springfield | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| PCParker-hannifin Corporation | Metamora | OH | Machinery Manufacturing333998 | — | ◐ LIKELY ACTIVE |
| PAPCC Airfoils Mold Masters International | Eastlake | OH | Machinery Manufacturing333511 | 100-499 | ◐ LIKELY ACTIVE |
| PAPCC Airfoils Painesville | Painesville | OH | Machinery Manufacturing333611 | 20-99 | ◐ LIKELY ACTIVE |
| PUPe Usa, INC. | Cincinnati | OH | Machinery Manufacturing333993 | 20-99 | ◐ LIKELY ACTIVE |
| PPPlaster Process Casting Co. dba Diversified Mold & Castings | Warrensville Heights | OH | Machinery Manufacturing333511 | 20-99 | ◐ LIKELY ACTIVE |
| PPPleasant Precision Inc | Kenton | OH | Machinery Manufacturing333514 | 20-99 | ◐ LIKELY ACTIVE |
| PSPneumatic Scale Angelus | Cuyahoga Falls | OH | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| PSPneumatic Scale Angelus - Stow | Stow | OH | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
| PCPollution Control Systems, INC. | Milford | OH | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| PIPositrol, INC. | Cincinnati | OH | Machinery Manufacturing333515 | — | ▲ REPORTED CLOSED |
| PIPostle Industries Inc. | Brookpark | OH | Machinery Manufacturing333992 | 20-99 | ◐ LIKELY ACTIVE |
| PHPowerex Harrison | Harrison | OH | Machinery Manufacturing333912 | 100-499 | ◐ LIKELY ACTIVE |
| PLPpcc LLC | Willoughby | OH | Machinery Manufacturing333922 | 20-99 | ◐ LIKELY ACTIVE |
| PMPragmatic Manufacturing, LLC | Brunswick | OH | Machinery Manufacturing333515 | — | ◐ LIKELY ACTIVE |
| PGPrecision Gear LLC | Twinsburg | OH | Machinery Manufacturing333612 | — | ◐ LIKELY ACTIVE |
| PTPrimetals Technologies - Cortland | Cortland | OH | Machinery Manufacturing333519 | 20-99 | ◐ LIKELY ACTIVE |
| PTPrimetals Technologies - New London | New London | OH | Machinery Manufacturing333519 | 20-99 | ◐ LIKELY ACTIVE |
| PTProcess Technology - Headquarters | Willoughby | OH | Machinery Manufacturing333248 | 20-99 | ◐ LIKELY ACTIVE |
| PTProcess Technology - Mentor | Mentor | OH | Machinery Manufacturing333248 | 100-499 | ◐ LIKELY ACTIVE |
| PAProgressive Automations USA INC. | Blue Ash | OH | Machinery Manufacturing333995 | — | ◐ LIKELY ACTIVE |
| PSProVia Special Projects Facility | Sugarcreek | OH | Machinery Manufacturing333998 | 1-19 | ◐ LIKELY ACTIVE |
| PPsg | Cincinnati | OH | Machinery Manufacturing333911 | 100-499 | ◐ LIKELY ACTIVE |
| QCQueen City Manufacturing LLC | Cincinnati | OH | Machinery Manufacturing333517 | 20-99 | ◐ LIKELY ACTIVE |
| QSQuest Service Labs INC | Salem | OH | Machinery Manufacturing333993 | — | ◐ LIKELY ACTIVE |
| RTRB Tool and Manufacturing | Cincinnati | OH | Machinery Manufacturing333515 | 20-99 | ◐ LIKELY ACTIVE |
| RIReichard Industries | Columbiana | OH | Machinery Manufacturing333999 | 20-99 | ◐ LIKELY ACTIVE |
| RSRemelt Systems | East Canton | OH | Machinery Manufacturing333994 | 1-19 | ◐ LIKELY ACTIVE |
| RAremtec automation llc | Mason | OH | Machinery Manufacturing333999 | 20-99 | ◐ LIKELY ACTIVE |
Rennco Automation Systems, INC. | Holland | OH | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| RRResource Recycling INC> | Lima | OH | Machinery Manufacturing333112 | 20-99 | ◐ LIKELY ACTIVE |
| RCRJS Corporation | Akron | OH | Machinery Manufacturing333249 | 20-99 | ◐ LIKELY ACTIVE |
| RMRM Materials Handling | Springfield | OH | Machinery Manufacturing333923 | 20-99 | ◐ LIKELY ACTIVE |
| RRosenboom | Bowling Green | OH | Machinery Manufacturing333995 | 100-499 | ◐ LIKELY ACTIVE |
| RCRpm Carbide Die, INC. | Arcadia | OH | Machinery Manufacturing333514 | — | ◐ LIKELY ACTIVE |
| SUSakamura USA Inc. | Marion | OH | Machinery Manufacturing333517 | 1-19 | ◐ LIKELY ACTIVE |
| SRSandvik Rock Processing Solution North America LLC | Cleveland | OH | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| SDSchafer Driveline | Fredericktown | OH | Machinery Manufacturing333112 | 100-499 | ◐ LIKELY ACTIVE |
Selas Heat Technology Company LLC | Streetsboro | OH | Machinery Manufacturing333414 | — | ◐ LIKELY ACTIVE |
| SOServisoft of Middlefield, LLC | Burton | OH | Machinery Manufacturing333310 | — | ◐ LIKELY ACTIVE |
| SBSES Beeson | Alliance | OH | Machinery Manufacturing333998 | 100-499 | ◐ LIKELY ACTIVE |
| SLSES Lake Park | Alliance | OH | Machinery Manufacturing333998 | 20-99 | ◐ LIKELY ACTIVE |
| SMShelby Mfg 305 Mansfield Ave | Shelby | OH | Machinery Manufacturing333112 | 100-499 | ◐ LIKELY ACTIVE |
| SMSirSteak Machinery, Inc | Mansfield | OH | Machinery Manufacturing333241 | 1-19 | ◐ LIKELY ACTIVE |