| MMMoore & Morford INC | Greensburg | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| MCMorris Coupling Company | Erie | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| MHMuncy Homes INC | Muncy | PA | Wood Product Manufacturing321992 | 100-499 | ◐ LIKELY ACTIVE |
| NCNac Carbon Products | Punxsutawney | PA | Electrical Equipment, Appliance & Component Manufacturing335991 | 20-99 | ◐ LIKELY ACTIVE |
| NPNamsco Plastics Ind. Inc | New Kensington | PA | Plastics and Rubber Products Manufacturing326112 | 20-99 | ◐ LIKELY ACTIVE |
| NBNardone Brothers Baking CO INC | Hanover Township | PA | Food Manufacturing311412 | 100-499 | ◐ LIKELY ACTIVE |
| NTNational Ticket CO. | Paxinos | PA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| NCN C Stauffer & Sons INC | Factoryville | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| NHNew Holland Custom Woodwork Mfg | New Holland | PA | Furniture and Related Product Manufacturing337122 | 20-99 | ◐ LIKELY ACTIVE |
| NSNj Shell Casting Corp/ Marietta | Marietta | PA | Primary Metal Manufacturing331511 | 1-19 | ◐ LIKELY ACTIVE |
| NPNlmk Pennsylvania Lcc | Farrell | PA | Primary Metal Manufacturing331110 | 500+ | ◐ LIKELY ACTIVE |
| NENortheastern Envelope CO | Old Forge | PA | Paper Manufacturing322232 | 20-99 | ◐ LIKELY ACTIVE |
| NMNorth Metal & Chemical CO | York | PA | Chemical Manufacturing325130 | 1-19 | ◐ LIKELY ACTIVE |
| NPNorth Penn Polishing & Plating INC. | Sellersville | PA | Fabricated Metal Product Manufacturing332813 | 20-99 | ◐ LIKELY ACTIVE |
| OPOhiopyle Prints, INC. | Ohiopyle | PA | Printing and Related Support Activities323113 | 100-499 | ◐ LIKELY ACTIVE |
| OCOil Creek Plastics | Titusville | PA | Plastics and Rubber Products Manufacturing326122 | 20-99 | ◐ LIKELY ACTIVE |
| OSO'rourke & Sons, INC. | West Chester | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PBPalmyra Bologna Company, INC. | Palmyra | PA | Food Manufacturing311612 | 20-99 | ◐ LIKELY ACTIVE |
| PIPanagraphics INC | Dover | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PSParticle Size Tech/quakertown | Quakertown | PA | Chemical Manufacturing325412 | 1-19 | ◐ LIKELY ACTIVE |
| PIPbm INC | Irwin | PA | Fabricated Metal Product Manufacturing332912 | 100-499 | ◐ LIKELY ACTIVE |
| PFPellman Foods INC | New Holland | PA | Food Manufacturing311813 | 20-99 | ◐ LIKELY ACTIVE |
| PMPendu Manufacturing, INC. | New Holland | PA | Machinery Manufacturing333210 | 20-99 | ◐ LIKELY ACTIVE |
| PCPenn Color/hatfield | Hatfield | PA | Textile Mills313210 | 100-499 | ◐ LIKELY ACTIVE |
| PFPenn Foam Corporation | Allentown | PA | Plastics and Rubber Products Manufacturing326150 | 20-99 | ◐ LIKELY ACTIVE |
| PTPennsylvania Transformer Technologies, LLC - Canonsburg, PA | Canonsburg | PA | Fabricated Metal Product Manufacturing332420 | 100-499 | ◐ LIKELY ACTIVE |
| PUPenn Union Corp/edinboro | Edinboro | PA | Primary Metal Manufacturing331529 | 20-99 | ◐ LIKELY ACTIVE |
Phb INC | Fairview | PA | Primary Metal Manufacturing331521 | 100-499 | ◐ LIKELY ACTIVE |
| PCPhoenix Contact | Middletown | PA | Electrical Equipment, Appliance & Component Manufacturing335314 | — | ◐ LIKELY ACTIVE |
| PSPhoenix Sintered Metals INC | Brockway | PA | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| PTPhoenix Tube CO | Bethlehem | PA | Primary Metal Manufacturing331210 | 100-499 | ◐ LIKELY ACTIVE |
| PPPiad Precision Casting Corporation | Greensburg | PA | Primary Metal Manufacturing331423 | 100-499 | ◐ LIKELY ACTIVE |
| PIPlastikos, INC. | Erie | PA | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| PMPleasant Mt Welding INC | Carbondale | PA | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| PVPleasant Valley Homes, Incorporated | Pine Grove | PA | Wood Product Manufacturing321991 | 100-499 | ◐ LIKELY ACTIVE |
| PPPmg Pennsylvania CORP | Philipsburg | PA | Fabricated Metal Product Manufacturing332117 | 100-499 | ◐ LIKELY ACTIVE |
| PIPolyflo, INC. | Saint Clair | PA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| PPPost Precision Castings INC | Strausstown | PA | Primary Metal Manufacturing331512 | 20-99 | ◐ LIKELY ACTIVE |
| PCPrecision Custom Components, LLC | York | PA | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| PKPrecision Kidd Steel CO | Aliquippa | PA | Primary Metal Manufacturing331221 | 20-99 | ◐ LIKELY ACTIVE |
| PPPrecision Plating Co/new Castle | New Castle | PA | Fabricated Metal Product Manufacturing332813 | 1-19 | ◐ LIKELY ACTIVE |
| PRPrecision Rehab Manufacturing | Harborcreek, Township of | PA | Miscellaneous Manufacturing339113 | 20-99 | ◐ LIKELY ACTIVE |
| PCPremier Custom Built, Inc. | New Holland | PA | Furniture and Related Product Manufacturing337110 | 100-499 | ◐ LIKELY ACTIVE |
| PPPremier Pan CO INC | Crescent | PA | Fabricated Metal Product Manufacturing332119 | 100-499 | ◐ LIKELY ACTIVE |
| PMPrion Manufacturing | Oakdale | PA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| PFProminent Fluid Controls, INC. | Pittsburgh | PA | Machinery Manufacturing333318 | 100-499 | ◐ LIKELY ACTIVE |
| PTPrompton Tool INC | Honesdale | PA | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| QCQuality Custom Cabinetry, Inc | New Holland | PA | Furniture and Related Product Manufacturing337110 | 100-499 | ◐ LIKELY ACTIVE |
| QSQuality Stone Veneer, INC. | Refton | PA | Nonmetallic Mineral Product Manufacturing327390 | 20-99 | ◐ LIKELY ACTIVE |
| RTReading Truck Body, LLC | Reading | PA | Fabricated Metal Product Manufacturing332312 | 500+ | ◐ LIKELY ACTIVE |