| DMDaria Metal Fabricators, Inc. | Perkasie | PA | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| DCDart Container CORP of Pennsylvania | Leola | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| DADavis Alloys Manufacturing, LLC | Sharpsville | PA | Primary Metal Manufacturing331513 | 20-99 | ◐ LIKELY ACTIVE |
| DPDayton Parts LLC | Harrisburg | PA | Apparel Manufacturing315223 | — | ◐ LIKELY ACTIVE |
Dayton Superior CORP | Tremont | PA | Primary Metal Manufacturing331222 | — | ◐ LIKELY ACTIVE |
| DSDba Select Metal Litho Greenville | Greenville | PA | Fabricated Metal Product Manufacturing332812 | — | ◐ LIKELY ACTIVE |
| DMDecorated Metal Container Mfg Plt | Lancaster | PA | Fabricated Metal Product Manufacturing332431 | — | ◐ LIKELY ACTIVE |
| DPDee Packaging Solutions | Chester | PA | Paper Manufacturing322212 | 20-99 | ◐ LIKELY ACTIVE |
| DMDefinitive Manufacturing Solutions, LLC | Quarryville | PA | Machinery Manufacturing333514 | 1-19 | ◐ LIKELY ACTIVE |
| DDDeLux Dental Laboratory | Reading | PA | Miscellaneous Manufacturing339116 | 20-99 | ◐ LIKELY ACTIVE |
| DLDentsply Llc, Dba Sultan Healthcare | York | PA | Miscellaneous Manufacturing339114 | — | ◐ LIKELY ACTIVE |
| DFD. F. Stauffer Biscuit Co., Inc | York | PA | Food Manufacturing311821 | 100-499 | ◐ LIKELY ACTIVE |
| DYD.g. Yuengling & Son, INC. | Pottsville | PA | Beverage and Tobacco Product Manufacturing312120 | 100-499 | ◐ LIKELY ACTIVE |
| DPDieffenbach's Potato Chips - Plant 1 | Womelsdorf | PA | Food Manufacturing311919 | 100-499 | ◐ LIKELY ACTIVE |
| DWDinsmore Welding & Fabrication, INC. | Kersey | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| DMDl Martin Co/mercersburg | Mercersburg | PA | Fabricated Metal Product Manufacturing332710 | — | ◐ LIKELY ACTIVE |
| DCDober Chemical Corporation | Hazleton | PA | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| DFDonnelley Financial Llc/lancaster Financial Printing Div | Lancaster | PA | Printing and Related Support Activities323110 | 500+ | ◐ LIKELY ACTIVE |
| DIDonsco Inc/mt Joy | Mount Joy | PA | Primary Metal Manufacturing331511 | — | ◐ LIKELY ACTIVE |
| DPDoodad Printing, LLC | Lancaster | PA | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| DPDresser Pipeline Solutions | Bradford | PA | Fabricated Metal Product Manufacturing332919 | — | ◐ LIKELY ACTIVE |
| DBDsm Biomedical | Exton | PA | Miscellaneous Manufacturing339112 | 100-499 | ◐ LIKELY ACTIVE |
Dubois Granite & Quartz LLC | Dubois | PA | Nonmetallic Mineral Product Manufacturing327991 | 1-19 | ◐ LIKELY ACTIVE |
| DIDuMor, Inc. | Mifflintown | PA | Furniture and Related Product Manufacturing337124 | 20-99 | ◐ LIKELY ACTIVE |
| DCDunmore Corp/bristol | Bristol | PA | Printing and Related Support Activities323113 | — | ◐ LIKELY ACTIVE |
| DIDyco, Inc. | Bloomsburg | PA | Machinery Manufacturing333993 | 100-499 | ◐ LIKELY ACTIVE |
Eastern Controls, INC of Pa | Edgemont | PA | Computer and Electronic Product Manufacturing334513 | 20-99 | ◐ LIKELY ACTIVE |
Eastman Chemical Company | West Elizabeth | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| EPEast Penn Kutztown Battery Plt | Kutztown | PA | Primary Metal Manufacturing331420 | — | ◐ LIKELY ACTIVE |
| EPEast Penn Mfg CO Inc/battery Assembly | Lyons | PA | Plastics and Rubber Products Manufacturing326199 | — | ◐ LIKELY ACTIVE |
| ELEconomy Locker, LLC | Muncy | PA | Food Manufacturing311612 | 20-99 | ◐ LIKELY ACTIVE |
| EIEcore Intl Inc/york | York | PA | Plastics and Rubber Products Manufacturing326199 | 100-499 | ◐ LIKELY ACTIVE |
| EBEdwin Bell Containers | Cuddy | PA | Paper Manufacturing322211 | 20-99 | ◐ LIKELY ACTIVE |
| EIEHC Industries, Inc. | Mount Pleasant | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| EHE H Schwab | Turtle Creek | PA | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
Electro Soft, INC. | Montgomeryville | PA | Computer and Electronic Product Manufacturing334419 | 20-99 | ◐ LIKELY ACTIVE |
| ECElk CO of Texas Llc/myerstown | Myerstown | PA | Petroleum and Coal Products Manufacturing324122 | — | ◐ LIKELY ACTIVE |
| EGEmsco Group | Girard | PA | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| EIEncotech, Inc. | Eighty Four | PA | Machinery Manufacturing333310 | 1-19 | ◐ LIKELY ACTIVE |
| ETEnergy Transfer Marcus Hook Terminal | Marcus Hook | PA | Petroleum and Coal Products Manufacturing324110 | — | ◐ LIKELY ACTIVE |
| EDEpiroc Drilling Tools LLC | Fort Loudon | PA | Machinery Manufacturing333120 | 20-99 | ◐ LIKELY ACTIVE |
| EIEquimeter Incorporated | Du Bois | PA | Fabricated Metal Product Manufacturing332439 | — | ◐ LIKELY ACTIVE |
| EDEsschem Div of Justi Group Inc/linwood | Linwood | PA | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| EEEsstech Essington Fac | Essington | PA | Chemical Manufacturing325199 | — | ◐ LIKELY ACTIVE |
| EIEuramax International INC | Lancaster | PA | Fabricated Metal Product Manufacturing332321 | — | ◐ LIKELY ACTIVE |
| EWE W Yost Company | Blue Bell | PA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◐ LIKELY ACTIVE |
| EBExcelsior Blower Systems, Inc. | Blandon | PA | Machinery Manufacturing333413 | 20-99 | ◐ LIKELY ACTIVE |
| EMExtreme Machine & Fabrication, Inc. | West Middlesex | PA | Fabricated Metal Product Manufacturing332710 | 100-499 | ◐ LIKELY ACTIVE |
| FSFairchild Semiconductor Corp/wright Twp | Mountain Top | PA | Fabricated Metal Product Manufacturing332813 | — | ◐ LIKELY ACTIVE |
| FPFarmer's Pride, INC. | Fredericksburg | PA | Food Manufacturing311615 | 500+ | ◐ LIKELY ACTIVE |