| KFKnouse Foods Coop INC Gardners Plant | Gardners | PA | Food Manufacturing311421 | — | ◇ UNVERIFIED |
| KFKoch's Farm Svc INC | Tamaqua | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
 Koehler Bright Star/hanover Twp | Wilkes Barre | PA | Primary Metal Manufacturing331421 | — | ◇ UNVERIFIED |
| KKKoller Kleaners/york | York | PA | Machinery Manufacturing333112 | — | ◇ UNVERIFIED |
| KFKraft Foods Global INC | Allentown | PA | Food Manufacturing311513 | — | ◇ UNVERIFIED |
| KFKraft Foods Group INC Philadelphia Bakery | Philadelphia | PA | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| KCKranos CORP Dba Schutt Reconditioning | Easton | PA | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| KMKrosaki Magnesita Refractories | York | PA | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| KFKulp Foundry/east Stroudsburg | East Stroudsburg | PA | Wood Product Manufacturing321991 | — | ◇ UNVERIFIED |
| KCKunzler & CO Inc/tyrone Plt | Tyrone | PA | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| KIKurz-hastings INC | Philadelphia | PA | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| KPKvaerner Power | Williamsport | PA | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| KOKyowa of America CORP | Waynesburg | PA | Plastics and Rubber Products Manufacturing326121 | — | ◇ UNVERIFIED |
| LSLafarge Scully Yard Concrete Plt | Pittsburgh | PA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| LFLa France Casting CO | Philadelphia | PA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| LTLaird Technologies | Delaware Water Gap | PA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| LSLamson & Sessions | Erie | PA | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| LLLancaster Laundry | Lancaster | PA | Computer and Electronic Product Manufacturing334417 | — | ◇ UNVERIFIED |
| LPLancaster Pump | Lancaster | PA | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| LSLandis Solutions Llc/waynesboro | Waynesboro | PA | Machinery Manufacturing333512 | — | ◇ UNVERIFIED |
| LMLane Mckees Rock Asphalt Plt/mckees Rock | Mckees Rocks | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LMLane Metal Prods Mfg | Bedford | PA | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| LCLannett CO | Philadelphia | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LCLannett CO | Philadelphia | PA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| LMLaurel Mountain Whirlpools INC | Turtle Creek | PA | Plastics and Rubber Products Manufacturing326130 | — | ◇ UNVERIFIED |
| LMLawrence Mcfadden CO. | Philadelphia | PA | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| LCLaynes Careful Clnr/jonestown Rd | Harrisburg | PA | Food Manufacturing311310 | — | ◇ UNVERIFIED |
| LELcr Embedded Systems INC | Norristown | PA | Computer and Electronic Product Manufacturing334511 | — | ◇ UNVERIFIED |
| LCLeague Collegiate Wear Inc/bridgeport | Bridgeport | PA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| LILebanon Ind/former Alcoa Plt | Lebanon | PA | Paper Manufacturing322291 | — | ◇ UNVERIFIED |
| LLLedvance Llc/st Marys | Saint Marys | PA | Electrical Equipment, Appliance & Component Manufacturing335110 | — | ◇ UNVERIFIED |
| LELeeds Enterprises | New Kensington | PA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| LALehigh Agricultural and Biological Services INC. | Hamburg | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| LJLe Jo Enterprises INC | Kimberton | PA | Textile Product Mills314100 | — | ◇ UNVERIFIED |
| LFLepko Finishing INC | Quakertown | PA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| LVLeybold Vacuum Prods INC | Export | PA | Machinery Manufacturing333912 | — | ◇ UNVERIFIED |
| LCLiberty Cleaners INC - Wikes Barre Facility | Wilkes Barre | PA | Transportation Equipment Manufacturing336610 | — | ◇ UNVERIFIED |
| LCLico Chemicals, INC. | Mc Keesport | PA | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| LOLignetics of New England/youngsville | Youngsville | PA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| LILincoln Industrial Chemical CO | Reading | PA | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| LLLinde LLC | Bethlehem | PA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| LLLinde Llc/butler Plt | Butler | PA | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| LPLindy Paving/conneaut Lake Asphalt Plt | Conneaut Lake | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving/erie Asphalt Plt | Erie | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving Homer City Plt | Homer City | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving, INC. 200 Neville Terminal | Neville Island | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving Inc/ Erie W 18th St Asphalt Plt | Erie | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving Inc/koppel Fac | New Galilee | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving Inc/new Kensington Plt | New Kensington | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| LPLindy Paving - Plant 996 (4200 Neville) | Pittsburgh | PA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
