| OEOtis Elevator Company | Chicago | IL | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| OCOzinga Chicago Rmc INC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OMOzinga Materials and Logistics | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PDPackaging Dynamics Dba Bagcraft Papercon | Chicago | IL | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| P4Pallets 4 Less, INC. | Chicago | IL | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| PBPantitlan Bakery | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| PDParagon Die Casting CO | Chicago | IL | Primary Metal Manufacturing331521 | — | ◇ UNVERIFIED |
| PEParkway Elevators, INC. | Chicago | IL | Machinery Manufacturing333921 | — | ◇ UNVERIFIED |
| PIPbss INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PLPeterson Legacy Group, INC. | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PWPfc Windy City Baking | Chicago | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| P6Phillips 66 | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PSPhil & Sons | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| POPhoenix Opco LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| POPhoenix Opco LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PIPhusion, INC. | Chicago | IL | Computer and Electronic Product Manufacturing334290 | — | ◇ UNVERIFIED |
| PPPilot Project Brewing, LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| PIPlanter, INC. Dba Victory | Chicago | IL | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PDPleasant Dank Ventures, LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| PCPlote Const INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PGPM Gabriel, LLC | Chicago | IL | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| PIPolaris Imports INC. | Chicago | IL | Food Manufacturing311225 | — | ◇ UNVERIFIED |
| PIPolpress, Inc. | Chicago | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| PPPolyair Packaging CORP | Chicago | IL | Paper Manufacturing322221 | — | ◇ UNVERIFIED |
| PDPoppie's Dough of Illinois, Inc. | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| PGPower Gas | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PAPramukh Auto Services INC Dba Maaco Auto Paint & Collision | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| PCPristerra Corporation | Chicago | IL | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| PLProcedes LLC | Chicago | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| PFProfessional Freezing Services | Chicago | IL | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| PSPromet Steel INC. | Chicago | IL | Fabricated Metal Product Manufacturing332322 | — | ◇ UNVERIFIED |
| PSPropper Starter | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| PUProte USA LLC | Chicago | IL | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| QAQ Auto Body | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| QCQualitex Company | Chicago | IL | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| QSQuick Stop Gas | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RFRadio Flyer INC | Chicago | IL | Miscellaneous Manufacturing339930 | — | ◇ UNVERIFIED |
| RARamels Auto Svc | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RDRapid Displays | Chicago | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| RPRavenRook Publishing, LLC | Chicago | IL | Paper Manufacturing322230 | — | ◇ UNVERIFIED |
| RSRecycling Services INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RGRed Giant Oil CO LLC | Chicago | IL | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| RCRegal Cut Stone, LLC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| RAReliable Asphalt Corporation | Chicago | IL | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| RLRelish Labs LLC | Chicago | IL | Food Manufacturing311991 | — | ◇ UNVERIFIED |
| RWRepublic Windows & Doors INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RGRevere Graphic Services CO | Chicago | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| RMRidgeway Marathon | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| RFRightsize Facility Performance | Chicago | IL | Furniture and Related Product Manufacturing337214 | — | ◇ UNVERIFIED |
| RWRight Way Signs, LLC | Chicago | IL | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
