| LCLanxess CORP @ O'hare Airport Ord 838 | Chicago | IL | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| LBLaury Bride LLC | Chicago | IL | Apparel Manufacturing315210 | — | ◇ UNVERIFIED |
| LTLawndale Terrace | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| LBL & B Business Enterprises LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| LSLcg Sales, INC. | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| LILdr Industries, INC. | Chicago | IL | Fabricated Metal Product Manufacturing332913 | — | ◇ UNVERIFIED |
| LLLedgerock LLC | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| LALeons Automotive & Sales INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| LGLexi Group, INC. | Chicago | IL | Plastics and Rubber Products Manufacturing326160 | — | ◇ UNVERIFIED |
| LML & M Welding, Inc. | Chicago | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| LPLoop Paper Recycling | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| LALorel Ave Foodmart INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| LMLouis Meskan Brass Foundry, INC. | Chicago | IL | Primary Metal Manufacturing331523 | — | ◇ UNVERIFIED |
| LWLpi Worldwide INC | Chicago | IL | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| LCLyft Center INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MIMace Iron Works, INC. | Chicago | IL | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
| MGMagid Glove and Safety Manufacturing Company, L.l.c. | Chicago | IL | Apparel Manufacturing315990 | — | ◇ UNVERIFIED |
| MAMajor Armature Co-recycling Div | Chicago | IL | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| MDMajor Dickens LLC | Chicago | IL | Wood Product Manufacturing321211 | — | ◇ UNVERIFIED |
| MSMalvaes Solutions, Incorporated | Chicago | IL | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| MIMansoor INC - Citgo | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMarathon | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMarathon | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMarathon Auto Ctr INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MBMargies Brands Inc | Chicago | IL | Food Manufacturing311421 | — | ◇ UNVERIFIED |
| MCMaria Carlin Rangel | Chicago | IL | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| MCMarley Cooling Tower - Bldg 13 | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MGMarquette Gas | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MPMartinez Produce & Seafood, Inc. | Chicago | IL | Food Manufacturing311710 | — | ◇ UNVERIFIED |
| MOMartin Oil of Indiana 709 | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MAMarvel Abrasive Products, LLC | Chicago | IL | Nonmetallic Mineral Product Manufacturing327910 | — | ◇ UNVERIFIED |
| MMMarv-O-Lus Manufacturing Company | Chicago | IL | Fabricated Metal Product Manufacturing332618 | — | ◇ UNVERIFIED |
| MCMaster Casting and CAD | Chicago | IL | Miscellaneous Manufacturing339910 | — | ◇ UNVERIFIED |
| MGMaster Gauge CO. | Chicago | IL | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| MWMatthew Warren, INC. Dba Automatic Spring Coiling, CO. | Chicago | IL | Fabricated Metal Product Manufacturing332612 | — | ◇ UNVERIFIED |
| MWMccormick West Constructors LLC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MMMcdonnell & Miller Itt | Chicago | IL | Machinery Manufacturing333414 | — | ◇ UNVERIFIED |
| MPMel-lo Popcorn Specialties CO | Chicago | IL | Food Manufacturing311999 | — | ◇ UNVERIFIED |
| MSMellow Sweet, Inc. dba Jaafer Sweets | Chicago | IL | Food Manufacturing311811 | — | ◇ UNVERIFIED |
| MLMelpap LTD Dba Cm Morton | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MPMercury Plastics, INC Dba Felpak | Chicago | IL | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MPMetal Partners Rebar, LLC | Chicago | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| MAMetro Auto Tech United | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MBMetropolitan Brewing, LLC | Chicago | IL | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| MSMeyer Steel Drum, INC. | Chicago | IL | Fabricated Metal Product Manufacturing332439 | — | ◇ UNVERIFIED |
| MGM & G Graphics, INC. | Chicago | IL | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MEMico Express | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MTMicro Thread Corporation | Chicago | IL | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
| MIMidland Industries INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| MGMidway Gas Service INC | Chicago | IL | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
