| NCNova Chrome INC | Franklin Park | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
 Novartis Gene Therapies INC | Libertyville | IL | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| NNovatronix | Wood Dale | IL | Computer and Electronic Product Manufacturing334418 | 20-99 | ◇ UNVERIFIED |
| OSOakley Steel Products CO | Bellwood | IL | Primary Metal Manufacturing331111 | 20-99 | ◇ UNVERIFIED |
| OPOlympic Petroleum Corporation | Cicero | IL | Petroleum and Coal Products Manufacturing324191 | 1-19 | ◇ UNVERIFIED |
| OFOriginal Ferrara INC | Chicago | IL | Food Manufacturing311812 | 1-19 | ◇ UNVERIFIED |
| PIPace Industries INC | Chicago | IL | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| PIPeace Industries LTD | Rolling Meadows | IL | Fabricated Metal Product Manufacturing332618 | 20-99 | ◇ UNVERIFIED |
| PBPeter Baker & Son CO | Lake Bluff | IL | Petroleum and Coal Products Manufacturing324121 | 100-499 | ◇ UNVERIFIED |
| PCPike County Concrete INC | Pittsfield | IL | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| PPPioneer Powder | Franklin Park | IL | Miscellaneous Manufacturing339999 | 20-99 | ◇ UNVERIFIED |
| PPPlastisol Products INC | Addison | IL | Chemical Manufacturing325211 | 20-99 | ◇ UNVERIFIED |
| PPlews/edelmann | Dixon | IL | Transportation Equipment Manufacturing336390 | 100-499 | ◇ UNVERIFIED |
| PTPlymouth Tube CO | Streator | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PRPolyonics Rubber CO INC | Poplar Grove | IL | Plastics and Rubber Products Manufacturing326291 | 1-19 | ◇ UNVERIFIED |
| PPPower Packaging | Saint Charles | IL | Food Manufacturing311423 | — | ◇ UNVERIFIED |
| PRPrecise Rotary Die INC | Schiller Park | IL | Machinery Manufacturing333515 | 1-19 | ◇ UNVERIFIED |
| PTPrecision Tool Group | Towanda | IL | Fabricated Metal Product Manufacturing332212 | 20-99 | ◇ UNVERIFIED |
| PCPrintjet CORP | Machesney Park | IL | Machinery Manufacturing333993 | — | ◇ UNVERIFIED |
| PBProbat Burns | Vernon Hills | IL | Machinery Manufacturing333241 | 20-99 | ◇ UNVERIFIED |
| PPProduction Press INC | Jacksonville | IL | Printing and Related Support Activities323111 | 20-99 | ◇ UNVERIFIED |
| QPQc Powder | Villa Park | IL | Fabricated Metal Product Manufacturing332812 | 20-99 | ◇ UNVERIFIED |
| QLQuad Logistics Services LLC | Bolingbrook | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| QBQuality Bags INC | Addison | IL | Plastics and Rubber Products Manufacturing326111 | 1-19 | ◇ UNVERIFIED |
| QPQuality Plating | Sterling | IL | Miscellaneous Manufacturing339999 | 1-19 | ◇ UNVERIFIED |
| RGRainbow Graphics | Mundelein | IL | Printing and Related Support Activities323111 | 20-99 | ◇ UNVERIFIED |
| RKRa Kerley Ink Engineers INC | Broadview | IL | Chemical Manufacturing325910 | 1-19 | ◇ UNVERIFIED |
| RRRanger Redi-mix | Woodstock | IL | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| RGRepro Graphics | Elk Grove Village | IL | Printing and Related Support Activities323111 | 20-99 | ◇ UNVERIFIED |
| RPRising Pharma Holdings | Decatur | IL | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| RLRl Lewis Industries INC | Pekin | IL | Fabricated Metal Product Manufacturing332710 | 20-99 | ◇ UNVERIFIED |
| RRRogers Redi-mix | Ruma | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◇ UNVERIFIED |
| RDRr Donnelley | Clinton | IL | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| RCRs Cryo Equipment INC | Manteno | IL | Transportation Equipment Manufacturing336390 | 1-19 | ◇ UNVERIFIED |
| SLSelective Label and Printing, Inc. | Sugar Grove | IL | Printing and Related Support Activities323111 | 1-19 | ◇ UNVERIFIED |
| SShopwerks | Braceville | IL | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| SISiemens Industry INC | West Chicago | IL | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| SGSigma Graphics | Ottawa | IL | Printing and Related Support Activities323119 | 1-19 | ◇ UNVERIFIED |
| SSmf | Minonk | IL | Fabricated Metal Product Manufacturing332312 | 100-499 | ◇ UNVERIFIED |
| SCSolo Cup Operating CORP | Urbana | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| SCSouthwire CO | Waukegan | IL | Electrical Equipment, Appliance & Component Manufacturing335929 | — | ◇ UNVERIFIED |
| SRSport Redi-mix LLC | Champaign | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◇ UNVERIFIED |
| SPStack-on Products | Wauconda | IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| SGSummit Graphics | Moline | IL | Printing and Related Support Activities323113 | 1-19 | ◇ UNVERIFIED |
| SISuperior Industrial Equipment | Sycamore | IL | Machinery Manufacturing333298 | 20-99 | ◇ UNVERIFIED |
| SMSuperior Metalcraft INC | Lansing | IL | Fabricated Metal Product Manufacturing332439 | 1-19 | ◇ UNVERIFIED |
| TPTempco Prod CO | Robinson | IL | Miscellaneous Manufacturing339999 | 20-99 | ◇ UNVERIFIED |
| TMTerrell Materials CORP | Rosemont | IL | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◇ UNVERIFIED |
| TPThe Plastics Group INC | Willowbrook | IL | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◇ UNVERIFIED |
| THTison & Hall Concrete Prod INC | Harrisburg | IL | Nonmetallic Mineral Product Manufacturing327331 | 1-19 | ◇ UNVERIFIED |
