| BMBright Metal Finishing CO | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| BABroadway and Briar LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BABroadway and Briar LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BCBronzeville Community Microgrid | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BNBrose North America | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BFBrumund Foundry INC | Chicago | IL | Primary Metal Manufacturing331524 | — | ◇ UNVERIFIED |
| BCBSC Cafe 2 LLC | Chicago | IL | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| BCBSC Cafe 3 LLC | Chicago | IL | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| BSB & S Pallet Corporation | Chicago | IL | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| BRBudget Rent a Car System INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BRBudget Rent-a-car Systems INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| BBBurning Bush Brewery LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| BGBuy Go Bananas LLC | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| CGCal-ill Gasket Co., INC. | Chicago | IL | Miscellaneous Manufacturing339991 | — | ◇ UNVERIFIED |
| CCCalumet Container Corporation | Chicago | IL | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
| CCCameo Container Corporation-halsted Warehouse | Chicago | IL | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| CCCapitol Car Wash | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCCapitol Cement CO INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CPCardinal Pallet CO. | Chicago | IL | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| CRCarolina Repair Shop Dba a to Z Auto Repair INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CSCarreon Service Station | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CTCasward Tool Works | Chicago | IL | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| CBC & B Welders, INC. | Chicago | IL | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| CACharles Austin Limited | Chicago | IL | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| CSCharter Steel Trading | Chicago | IL | Primary Metal Manufacturing331111 | — | ◇ UNVERIFIED |
| CBCheesecakes By Jr, INC. Dba J R Dessert Bakery | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
 Chicago Anodizing Company | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| Chicago Anodizing Company | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| Chicago Anodizing Company | Chicago | IL | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| CAChicago Ave Marathon | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CBChicago Bakery North | Chicago | IL | Food Manufacturing311821 | — | ◇ UNVERIFIED |
| CCChicago City of | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Dept of Fleet & Facility Mgmt | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site 1 North & Throop | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site 2 Ravenswood | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site 3 Nw | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site 4 Sw | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site 5 Sunny Side | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site 8 104th | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CCChicago City of Fuel Site Fs 205 Belmont & Western | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CDChicago Dept of Transportation | Chicago | IL | Nonmetallic Mineral Product Manufacturing327310 | — | ◇ UNVERIFIED |
| CDChicago Development And Manufacturing Inc | Chicago | IL | Textile Mills313220 | — | ◇ UNVERIFIED |
| CFChicago Fabrications LLC | Chicago | IL | Furniture and Related Product Manufacturing337212 | — | ◇ UNVERIFIED |
| CFChicago Fire Brick CO | Chicago | IL | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| CHChicago Housing Authority Pomeroy Senior Housing | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CKChicago Kingsbury LLC & Sterling Bay Property Mgmt LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CKChicago Kitchen Concepts LLC | Chicago | IL | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| CLChicago Linehaul INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CMChicago Manufacturing Campus | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| CMChicago Mattress Company | Chicago | IL | Furniture and Related Product Manufacturing337910 | — | ◇ UNVERIFIED |
