| MCMarley Cooling Tower Company | Louisville | KY | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MCModern Concrete Products CO | Louisville | KY | Nonmetallic Mineral Product Manufacturing327331 | — | ◇ UNVERIFIED |
| MBMondi Bags Usa, LLC | Louisville | KY | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
 Monroe Truck Equipment, INC. | Louisville | KY | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| MCMulti-color Corporation | Louisville | KY | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MMulti-metals | Louisville | KY | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| MPMulti Packaging Solutions | Louisville | KY | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| NTNational Tobacco Company LP | Louisville | KY | Beverage and Tobacco Product Manufacturing312230 | — | ◇ UNVERIFIED |
| NPNeff Packaging | Louisville | KY | Paper Manufacturing322212 | — | ◇ UNVERIFIED |
| NBNelson B. Boone Company | Louisville | KY | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| NNibco | Louisville | KY | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NANovelis Aluminum CORP. | Louisville | KY | Primary Metal Manufacturing331315 | — | ◇ UNVERIFIED |
| ONOmega National Products Company | Louisville | KY | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| OSOtc Services | Louisville | OH | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| OHOttobock Healthcare, LP | Louisville | KY | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| OCOwens Corning Composite Materials | Louisville | KY | Textile Mills313230 | — | ◇ UNVERIFIED |
| PPPalmer Products | Louisville | KY | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| PEPf Environmental Technologies, INC | Louisville | KY | Nonmetallic Mineral Product Manufacturing327410 | — | ◇ UNVERIFIED |
| PMPhilip Morris Lmcp | Louisville | KY | Beverage and Tobacco Product Manufacturing312230 | — | ◇ UNVERIFIED |
| PLPleatco, LLC. | Louisville | KY | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PMPorcelain Metals CORP | Louisville | KY | Fabricated Metal Product Manufacturing332000 | — | ◇ UNVERIFIED |
| PPPorter Paint Demolition | Louisville | KY | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PFPremium Foil Products | Louisville | KY | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| PFProducer Feeds | Louisville | KY | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| PPProgress Paint Company | Louisville | KY | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| PRProgress Rail | Louisville | KY | Wood Product Manufacturing321211 | — | ◇ UNVERIFIED |
| PRProgress Rail Services CORP | Louisville | KY | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| QKQuikrete - Kentucky Plant | Louisville | KY | Nonmetallic Mineral Product Manufacturing327999 | — | ◇ UNVERIFIED |
| RTRe Trousil CO INC | Louisville | CO | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| RSRev-a Shelf Company LLC | Louisville | KY | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| RPRiverside Paving and Contracting Company INC | Louisville | KY | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RARives and Reynolds Lumber Company Inc, Louisville Sawmill | Louisville | MS | Wood Product Manufacturing321113 | — | ◇ UNVERIFIED |
| RIRockmont Ind INC | Louisville | CO | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| RFRoseburg Forest Products South Lp, Louisville Facility | Louisville | MS | Wood Product Manufacturing321219 | — | ◇ UNVERIFIED |
| SSSandvik Sorting Systems | Louisville | KY | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| SRSanta Rosa Systems | Louisville | KY | Machinery Manufacturing333922 | — | ◇ UNVERIFIED |
| SHSapa H E Tubing INC | Louisville | KY | Paper Manufacturing322299 | — | ◇ UNVERIFIED |
| SASealed Air, Louisville | Louisville | KY | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| SSealmaster | Louisville | KY | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
| SWService Welding and Machine | Louisville | KY | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| SWService Welding & Machine CO. | Louisville | KY | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SSSierra Space | Louisville | CO | Transportation Equipment Manufacturing336419 | — | ◇ UNVERIFIED |
| SSSierra Space | Louisville | CO | Transportation Equipment Manufacturing336419 | — | ◇ UNVERIFIED |
| SSSierra Space | Louisville | CO | Transportation Equipment Manufacturing336419 | — | ◇ UNVERIFIED |
| SSSmurfit Stone Container Ent | Louisville | KY | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| SLSolae, LLC Dba Dupont Soy Polymers | Louisville | KY | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| SPSolid Power - 486 S. Pierce Ave | Louisville | CO | Electrical Equipment, Appliance & Component Manufacturing335911 | — | ◇ UNVERIFIED |
 Sonoco Protective Solutions, INC. | Louisville | KY | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| SPSoutheast Pallet Recycling CO | Louisville | KY | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| SSSouthern Standard Cartons | Louisville | KY | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
