| ARAmerenenergy Resouces Generating CO | Peoria | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AMAmerica Material Sales | Maywood | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ADAmerican Demolition CORP | La Grange Park | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AHAnderson Heat Treating INC | Rockford | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| APAntioch Packing House | Antioch | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ARAppliance Recylcers INC | Granite City | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AIAquion INC | Roselle | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AWAquion Water Treatment Products LLC Awtp Holding LLC | Elk Grove Village | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ADArea Diesel Service INC | Carlinville | IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| ABArends Bros. LLC. | Melvin | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ALArlington LLC | Arlington Heights | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AGArnold Graphic Resources INC. | Schaumburg | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AArtco | Lemont | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ATAsian Trendwares INC | Lombard | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ATAstro Tire Removal INC | Thomasboro | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AWAt&t Wireless Navy Pier-water | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AFAugusta Fire Protection District | Augusta | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ATAurora Transmission | Montgomery | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ATAvicenna Technology, INC Dba Laserage | Waukegan | IL | Miscellaneous Manufacturing339112 | — | ◇ UNVERIFIED |
| AZAw Zengeler Cleaners INC | Northbrook | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBaker's Body Repair | Chebanse | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBattery Builders LLC | North Aurora | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BAB Auto Parts | East St Louis | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BWBaxter & Woodman Inc- Woodstock | Woodstock | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BRBell Racing CO | Rantoul | IL | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| BSBell Sports CO | Rantoul | IL | Miscellaneous Manufacturing339920 | — | ◇ UNVERIFIED |
| BSBell Sports INC | Rantoul | IL | Machinery Manufacturing333992 | — | ◇ UNVERIFIED |
| BCBerkeley Contract Packaging | Edwardsville | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BMBeverly Manufacturing CO | Tinley Park | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BJBill Jacobs Chevrolet Mazda | Joliet | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BDBl Duke Metal Recycling | Forest View | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BNBl Nickelson Iron & Metal | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBoarman Bros Partnership | Kincaid | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BABoasso America | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBody Builders Automotive INC | Rolling Meadows | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BSBolduc & Sons INC | Woodhull | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BDBoulder Designs | Rantoul | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BABrandis Aircraft | Taylorville | IL | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| BWBrian Wronke | Saint Joseph | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBrk Brands INC | Aurora | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BOBruce Oakley INC | Ottawa | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBuckeye Barnett Station | Litchfield | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BGBuffalo Grove Village of Public Svc Ctr | Buffalo Grove | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BWBulaw Welding | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BNBunge North America INC | Old Shawneetown | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCCaddell Construction | Rockford | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCCadie Car Hauling | Belvidere | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CPCalibrated Power Solutions | Marengo | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CRCalumet River Terminal | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CLCapstone Logistics | Joliet | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
