| PNParisian Novelty CO | Chicago | IL | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PMParkview Metal Products | Chicago | IL | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| PPaschen-newberg-foster | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PBPasco Beverages INC | Chicago | IL | Food Manufacturing311411 | — | ◇ UNVERIFIED |
| PFPeer Food Products CO | Chicago | IL | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| PGPepsi-cola General Bottlers INC | Chicago | IL | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| PMPerformance Minerals CORP | Chicago | IL | Nonmetallic Mineral Product Manufacturing327420 | — | ◇ UNVERIFIED |
| PHP & H Plating CO INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PPPioneer Plating CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PEPlastech Engineered Products | Chicago | IL | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| PCPlastic Capacitors INC | Chicago | IL | Computer and Electronic Product Manufacturing334414 | — | ◇ UNVERIFIED |
| PSPlating Service CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PMPrairie Material Sales - Plant 2 | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| PFPrecision Finishing | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PFPrecision Forming & Stamping | Chicago | IL | Fabricated Metal Product Manufacturing332116 | — | ◇ UNVERIFIED |
| PMPrecoat Metals | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PMPremier Metal Finishing INC | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| PMPrevue Metal Prod INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PAPure Asphalt CO | Chicago | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| PAPure Asphalt Company | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| PMPure Metal Recycling - Site B | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PMPure Metals Recycling LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| QSQuality Snack Foods INC | Chicago | IL | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| RARainbow Art CO | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| RAReliable Asphalt CORP | Chicago | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RGReliable Galvanizing CO INC | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| RLReliable Laflin LLC | Chicago | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RMReliable Materials CORP of Il | Chicago | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| RCRemet CORP | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RMReserve Marine Terminal | Chicago | IL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| RTResource Technology Corp-paxton | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RPRez Packaging INC | Chicago | IL | Chemical Manufacturing325611 | — | ◇ UNVERIFIED |
| RDRider Dickerson INC | Chicago | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RARippel Architectural Metals INC | Chicago | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| RCRita CORP | Chicago | IL | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| RLRm Lucas CO | Chicago | IL | Petroleum and Coal Products Manufacturing324122 | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals LLC | Chicago | IL | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| RDRotation Dynamics CORP | Chicago | IL | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| RRR & R Materials | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RSRr Street & CO INC | Chicago | IL | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| RSR S Owens and Company | Chicago | IL | Fabricated Metal Product Manufacturing332215 | — | ◇ UNVERIFIED |
| RBRubschlager Baking CORP | Chicago | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| RPRycoline Products INC | Chicago | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| SESalisbury Electrical Safety LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| SLSara Lee - Chicago Facility | Chicago | IL | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| SISarcol INC | Chicago | IL | Machinery Manufacturing333514 | — | ◇ UNVERIFIED |
| SBS & B Finishing CO INC | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| SGSchiele Graphics INC | Chicago | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| SBSchultz Barrel & Drum | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SBSchulze & Burch Biscuit CO | Chicago | IL | Food Manufacturing311821 | — | ◇ UNVERIFIED |
