| OSOptimas Solutions | Wood Dale | IL | — | ◇ UNVERIFIED |
| OSOrange State Steel Construction, INC | Pinellas Park | FL | — | ◇ UNVERIFIED |
| OOOrchid Orthopedics | Arcadia | CA | — | ◇ UNVERIFIED |
| OOOrchid Orthopedics Solutions | Santa Ana | CA | — | ◇ UNVERIFIED |
| OIOregon Iron Works Hidden Way | Vancouver | WA | — | ◇ UNVERIFIED |
| OIOregon Iron Works INC 3001 | Vancouver | WA | — | ◇ UNVERIFIED |
| OIOrion Industries Auburn | Auburn | WA | — | ◇ UNVERIFIED |
| OMOrion Marine Construction, INC | Tampa | FL | — | ◇ UNVERIFIED |
| OMOrnamental Metalworks INC | Decatur | IL | — | ◇ UNVERIFIED |
| OTOtis Technology INC | Lyons Falls | NY | — | ◇ UNVERIFIED |
| OSOtten Screw Products Co-otten Screw Products CO | Saint Louis | MO | — | ◇ UNVERIFIED |
| OSOutland Steel, INC. | Caldwell | ID | — | ◇ UNVERIFIED |
| OGOwens-brockway Glass Containers INC | Godfrey | IL | — | ◇ UNVERIFIED |
| OWO W Hubbell & Sons | New York Mills | NY | — | ◇ UNVERIFIED |
| OMOxford Manufacturing, LLC | Selma | AL | — | ◇ UNVERIFIED |
| OSOzark Steel Fabricators INC | Farmington | MO | — | ◇ UNVERIFIED |
| PSPabrico Steel Fabricators | Paterson | NJ | — | ◇ UNVERIFIED |
| PIPacal Industries LLC | La Crosse | WI | — | ◇ UNVERIFIED |
| PLPacal LLC | Roseville | MN | — | ◇ UNVERIFIED |
| PWPaccar Winch INC / Broken Arrow Winch Hoist Manufacturing | Broken Arrow | OK | — | ◇ UNVERIFIED |
| PAPacific Award Metals INC | Baldwin Park | CA | — | ◇ UNVERIFIED |
| PMPacific Metal Stampings INC | Valencia | CA | — | ◇ UNVERIFIED |
| POPacific Office Automation | Seattle | WA | — | ◇ UNVERIFIED |
| POPaddock of California | Rock Hill | SC | — | ◇ UNVERIFIED |
| PMPadnos Manufacturing INC | Grand Rapids | MI | — | ◇ UNVERIFIED |
| PMPalfinger Marine USA INC | Portsmouth | VA | — | ◇ UNVERIFIED |
| PAPall Aeropower CORP Fort Myers | Fort Myers | FL | — | ◇ UNVERIFIED |
| PMPalmer Mfg. & Tank, INC. | Dickinson | ND | — | ◇ UNVERIFIED |
| PGPamarco Global Graphics | Walton | KY | — | ◇ UNVERIFIED |
| PWPampa Wind Tower Manufacturing Facility | Pampa | TX | — | ◇ UNVERIFIED |
| PUPandrol USA LP | Bridgeport | NJ | — | ◇ UNVERIFIED |
| PPPaper People, LLC | Vancouver | WA | — | ◇ UNVERIFIED |
| PMParagon Machine Company, INC. | Saint Petersburg | FL | — | ◇ UNVERIFIED |
| PMParagon Metal Fabrication | Cincinnati | OH | — | ◇ UNVERIFIED |
| PHParker Hannifin - Airtek | Lancaster | NY | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP | Lithia Springs | GA | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP | Deerwood | MN | — | ◇ UNVERIFIED |
| PHParker Hannifin CORP Hpd | Marysville | OH | — | ◇ UNVERIFIED |
| PParker-kalon | Campbellsville | KY | — | ◇ UNVERIFIED |
| PPParton & Preble INC | Warren | MI | — | ◇ UNVERIFIED |
| PFPasadena Fabrication Facility | Pasadena | TX | — | ◇ UNVERIFIED |
| PSPascagoula Sheet Metal Works INC | Pascagoula | MS | — | ◇ UNVERIFIED |
| PJPaterson James M | Totowa | NJ | — | ◇ UNVERIFIED |
| PSPathfinder Systems INC | Kansas City | MO | — | ◇ UNVERIFIED |
| PEPatrick Enterprises Corporation | Pembroke | VA | — | ◇ UNVERIFIED |
| PBPaul B Zimmerman INC | Lititz | PA | — | ◇ UNVERIFIED |
| PEPayne Engineering & Fabrications | Canton | MA | — | ◇ UNVERIFIED |
| PCPcc Composites | Frederick | CO | — | ◇ UNVERIFIED |
| PCPcc Composites.cn | Longmont | CO | — | ◇ UNVERIFIED |
| PQP&c Quality Turned Components | Smithfield | RI | — | ◇ UNVERIFIED |
| PPPdm Precast | Carlisle | IA | — | ◇ UNVERIFIED |
| PTPeacock Tool & Engineering | Spring Valley | CA | — | ◇ UNVERIFIED |
| PEPeerless Energy Systems | Omaha | NE | — | ◇ UNVERIFIED |
| PTPeerless Tube CO INC | Bloomfield | NJ | — | ◇ UNVERIFIED |
| PPPeko Precision Products Sheet Metal Division | Rochester | NY | — | ◇ UNVERIFIED |
| PMPelican Metal Products LLC | Harrison Township | MI | — | ◇ UNVERIFIED |
| PKPelletizer Knives | Houston | TX | — | ◇ UNVERIFIED |
| PIPemco INC | Pascagoula | MS | — | ◇ UNVERIFIED |
| PTPems Tool & Machine INC | Little Falls | NY | — | ◇ UNVERIFIED |
| PMPenasack Machine CO | Albion | NY | — | ◇ UNVERIFIED |
 Penco Products INC | Hamilton | NC | — | ◇ UNVERIFIED |
| PEPentair Electronic Packaging | Warwick | RI | — | ◇ UNVERIFIED |
| PPPenz Products, INC. | Mishawaka | IN | — | ◇ UNVERIFIED |
| PEPerez Engineering INC | Gardena | CA | — | ◇ UNVERIFIED |
| PAPerfect Air Control LLC / Metal Industries LLC of Nc | Marion | NC | — | ◇ UNVERIFIED |
| PEPerformance Energy Services LLC - Amelia Yard | Morgan City | LA | — | ◇ UNVERIFIED |
| PFPerformance Food Group | Kendallville | IN | — | ◇ UNVERIFIED |
| PSPerformance Structures, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| PMPerkins Machine CO | Warren | MA | — | ◇ UNVERIFIED |
| PNPermasteelisa North America | Harrison | NJ | — | ◇ UNVERIFIED |
| PTPermian Tank and Manufacturing INC / El Reno Manufacturing Plant | El Reno | OK | — | ◇ UNVERIFIED |
| PIPetersen INC | Pocatello | ID | — | ◇ UNVERIFIED |
| PMPetersen Metals | Hudson | FL | — | ◇ UNVERIFIED |
| PHPeters Heat Treating | Meadville | PA | — | ◇ UNVERIFIED |
| PPPfi Precision New Carlisle Ohio | New Carlisle | OH | — | ◇ UNVERIFIED |
| PIPgi International | Houston | TX | — | ◇ UNVERIFIED |
| PMPhilipp Mfg CO INC | Easthampton | MA | — | ◇ UNVERIFIED |
| PEPhilips Electronics | New Providence Boro | NJ | — | ◇ UNVERIFIED |
| PHP & H Mining Equipment | Milwaukee | WI | — | ◇ UNVERIFIED |
| PMPhoenix Manufacturing CO | Memphis | TN | — | ◇ UNVERIFIED |
| PMPhoenix Metalcraft | Phoenix | AZ | — | ◇ UNVERIFIED |
| PPPierce Pacific Manufacturing | Portland | OR | — | ◇ UNVERIFIED |
| PTPike Tool & Grinding Incorporated | Colorado Springs | CO | — | ◇ UNVERIFIED |
 Pilgrim Screw Corporation | Providence | RI | — | ◇ UNVERIFIED |
| PVPinson Valley Fabricators INC | Birmingham, Al | AL | — | ◇ UNVERIFIED |
| PAPioneer Aerospace CORP | Milton | FL | — | ◇ UNVERIFIED |
| PCPioneer Consolidated | North Oxford | MA | — | ◇ UNVERIFIED |
| PBPitney Bowes, INC. Stamford Facility | Stamford | CT | — | ◇ UNVERIFIED |
| POPitts Oilfield | San Angelo | TX | — | ◇ UNVERIFIED |
| PTP-k Tool & Manufacturing Company | Santa Teresa | NM | — | ◇ UNVERIFIED |
| PCPlant City Steel CO | Plant City | FL | — | ◇ UNVERIFIED |
| PEPlant Engineering and Maintenance - Oxford Machine and Fabrication | Oxford | AL | — | ◇ UNVERIFIED |
| PMPlant Maintenance Service CORP F-shop | Millington | TN | — | ◇ UNVERIFIED |
| PPPlastic Power Extrusions CORP | Schiller Park | IL | — | ◇ UNVERIFIED |
| PTPlaya Tool & Marine INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| P1Plt 18 | Oklahoma City | OK | — | ◇ UNVERIFIED |
| PAPlumbing and Mechanical Contractors | Milwaukie | OR | — | ◇ UNVERIFIED |
| PMP M Craftsman | Lakeland | FL | — | ◇ UNVERIFIED |
| PMPneumafil Metals Corporation | Charlotte | NC | — | ◇ UNVERIFIED |
| PSPneu-mech Systems Manufacturing INC | Statesville | NC | — | ◇ UNVERIFIED |
