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