| NANeon Art Llc | Chicago | IL | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| NLNeshamah LLC | Chicago | IL | Furniture and Related Product Manufacturing337910 | — | ◇ UNVERIFIED |
| NNestle | Chicago | IL | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| NDNetrality Data Center | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NENew England Cement CORP INC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| NPNext Partners, LLC | Chicago | IL | Food Manufacturing311942 | — | ◇ UNVERIFIED |
| NLNirvana9 LLC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| NJN Jaravelil Petroleum | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NMNoor Mart INC Bp | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NANorth America Stevedoring CO (nasco) | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NHNorth & Harlem | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NGN&p Group INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| NTNumat Technologies | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OLOak Lawn Svc | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OMO'Brien Metal Inc. | Chicago | IL | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| OAObsidian Asphalt Paving, Inc. | Chicago | IL | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| OCOdious Cellars, LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| OCOff Color Brewing LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| OMOgden Minuteman Citgo - Ogden Amstar | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OAOhare Airport | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OKO & K American CORP. | Chicago | IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| OGOk Gas & Food Mart | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OAOmega Autotech INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OIOmega Iii LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OSOne Stop | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OTOn Taps LTD. | Chicago | IL | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| OSOosterbaan Scaffolding Company | Chicago | IL | Furniture and Related Product Manufacturing337127 | — | ◇ UNVERIFIED |
| OIOrion Industries, LTD. | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| OIOrion Industries, LTD. | Chicago | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| OCO&s CORP | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OSO & S Dental, INC. | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OMOsorio Metals Supply, Inc. | Chicago | IL | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| 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 |
| PPepsico | Chicago | IL | Beverage and Tobacco Product Manufacturing312111 | — | ◇ 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 |
| PEPhoenix Electric Manufacturing Company | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| PFPhoenix Fabricators, LLC | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| POPhoenix Opco LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| POPhoenix Opco LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
