| AAA&p Auto Color INC Dba Maaco Auto Paint & Collision | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AApco | Chicago | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ALApologue LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312140 | — | ◇ UNVERIFIED |
| ALApologue, LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312140 | — | ◇ UNVERIFIED |
 Archer Daniels Midland Company | Chicago | IL | Food Manufacturing311211 | — | ◇ UNVERIFIED |
| ATArcher Tinning and Re-tinning | Chicago | IL | Primary Metal Manufacturing331491 | — | ◇ UNVERIFIED |
| AEArt Engravers | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ASArtistic Stitches, INC. | Chicago | IL | Textile Product Mills314999 | — | ◇ UNVERIFIED |
| AMArt Metal Finishers | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ASArt Surfaces and Fabrication LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ALAryzta, LLC | Chicago | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| AAshland | Chicago | IL | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| AGAshland Gas & Mini Mart Aka Marathon | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| APAshland Philips 66 - Khandwala INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AFAspen Foods | Chicago | IL | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| AFAspen Foods Div of Koch Foods, INC. | Chicago | IL | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| AIAssemblers INC. | Chicago | IL | Food Manufacturing311919 | — | ◇ UNVERIFIED |
| ARAssociated Rack Corporation Dba American Rack Company | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| AIAtlas Indiana 831 Aka Bp | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AAustenal | Chicago | IL | Miscellaneous Manufacturing339114 | — | ◇ UNVERIFIED |
| AMAustin & Montroft | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| AFAutomated Fuel Systems INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ACAvis Car Rental | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| ACAvis Commercial | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BBBad Butter LLC | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BBBad Butter LLC | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| BCBaja Contractors INC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| BCBaldi Candy CO. Dba Arway Confections, INC. | Chicago | IL | Food Manufacturing311340 | — | ◇ UNVERIFIED |
| BIBar-b-que Industries, Incorporated Dba Henry J's Meat Specialties | Chicago | IL | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| BCBarry Callebaut Usa, LLC | Chicago | IL | Food Manufacturing311320 | — | ◇ UNVERIFIED |
| BIBass Industries, LLC | Chicago | IL | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| BSBear Stewart LLC | Chicago | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BGBelchi Gas & Food INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BEBemar Electric Motor Service | Chicago | IL | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| BABernacki & Associates INC | Chicago | IL | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| BCBest Croutons, LLC | Chicago | IL | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| BDBest Diamond Plastics, LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BEBetter Earth LLC | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| BMBeverly Maintenance Garage | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BSBig Shoulders Roast Works LLC | Chicago | IL | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| BABionic Auto Parts and Sales INC | Chicago | IL | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| BRBnsf Railroad | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BPBolita Pallet Repair, INC. | Chicago | IL | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| BBp | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBp | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| B2Bp 25771 | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BFBp/ag Fullerton INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BABp Amoco | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BPBp Products North America INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBrian Bieniek and Cynthia Bieniek | Chicago | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
