- Lsc Communications Us LLC
- Luh Avoz
- Luke's
- Luke's Lobster
- Lulafit 1 Sw LLC
- Lulu Ranch & Co.
- Luma8
- Luminary
- Lumity
- Luo M. Jewelers
- Luo's Mfg. Jewelers INC
- Luxe Barber And Shave Lounge
- Lya
- Lynn Sage Breast Cancer Foundation
- Lyric Opera Of Chicago
- Lyric Opera Of Chicago
- M & J Jewlers
- M & J Wilkow, LTD.
- M & R Development, L.L.C.
- M B Jewelers INC.
- M J W Jewelry INC.
- M Krom & Sons
- M. Geller, Limited
- M. H. Giftshop
- M. Martin & Co.
- M.a.d. Scrubs LLC
- M.e. Marketplace
- M&m Jewelers
- M1 Finance
- M1 Finance
- M3 Capital Partners LLC
- Ma Jeweler / The Watch Clinic
- Mac & Mic Blessed Hands INC.
- Mac Time & Jewelery INC
- Machero INC.
- Mack & Associates
- Maclean Center Cafe
- Macquarie Capital (usa) INC.
- Macy's
- Madison Capital Funding
- Madison Dearborn Partners, LLC
- Madison Hair Styling
- Madison Street Search, INC.
- Magellan Development Group LLC
- Magnifico Servicios, LLC
- Magnify INC
- Magnolia Bakery
- Maharaj Chicago INC.
- Mail Center Of Chicago INC
- Mainstreet Advisors
- Majestic Jewelers
- Make-a-wish Illinois
- Mako Misu Tcg
- Malca Amit Customhouse Brokers, INC.
- Malca-amit Armored, INC.
- Malca-amit Usa, LLC
- Mammoth Poke
- Mandala Arts
- Mane Space LLC
- Mango Networx
- Manhattan Mart INC
- Manilow Suites
- Manny Jewelry & Design
- Map Lab, INC.
- Maranon Capital, L.P.
- Marble Box
- March Of Dimes
- Marcia Reynolds
- Marex Capital Markets INC
- Marex Capital Markets INC.
- Mari Designstudio LLC
- Maria Lagios, Soprano
- Mariano's Fresh Market #8503
- Mariela
- Mark Anthony Brewing Inc,
- Mark Richard Engel LTD.
- Mark Sheeran
- Mark Walker
- Market Creations
- Market Creations
- Market Creations
- Market Creations Cafe
- Market Hub Ventures
- Market Strategy Group, LLC
- Market Thyme
- Marketing Partnerships International, INC.
- Marketing Werks
- Marketstaff, INC.
- Marlon's Creations, LLC
- Marquee At Block 37
- Marquette Associates, INC.
- Marquette Newsstand
- Massage Therapy By Maria
- Master Blaster Shoe Shine & Repair
- Master Casting And Cad
- Master Cleaner
- Master Cleaners
- Master Wings Publishing LLC
- Masud Jewelers INC
- Matasano Security, LLC
- Matrix Capital Advisors
- Matrix North American Construction, INC.
- Mattaliano
- Matter, INC.
- Matthew E. Guski
- Mattress Firm
- Mau's House LLC
- Mavens Consulting Services, INC.
- Max's Take Out
- Maximum Healthcare Solutions
- Maximus Us Services, INC.
- Mazars USA LLP
- Mazzai Montopoli & Strahorn
- Mb Investments, LLC
- Mb Real Estate Services
- Mbs Floor Design
- Mc Registered Agents
- Mccorkle Litigation Services, INC.
- Mccormick & Schmick's Seafood Restaurant
- Mccreadylaw
- Mcdonald's
- Mcdonald's
- Mcdonald's
- Mcdonald's #20104
- Mcdonald's #4061
- Mcdonald's #6491
- Mcdonald's 25088
- Mcdonald's 28128
- Mcdonalds
- Mcdonalds Restaurant
- Mcg
- Mcguirewoods Consulting LLC
- Mckinley & Co. Medical Staffing
- Mckinsey & Company INC U.s.
- Mckinsey & Company, INC. Washington D.c.
- Mckissack & Mckissack Midwest, INC.
- Mclaughlin Violins, LLC
- Mcmckenzie Management Group
- Mcp Alternative Asset Partners, LTD.
- Mcpp One North Franklin, LLC
- Med Kitchen
- Medamerica, INC.
- Mediafly, INC.
- Mediatec Publishing
- Medieval Torture Museum
- Mediqus Asset Advisors, INC.
- Medline Industries, LP
- Medstaff Alternatives, INC.
- Mela
- Melamed & Associates, INC.
- Melcher + Tucker Consultants LLC
- Meli Cafe On Dearborn
- Mendocino Farms
- Menotti & Co.
- Mep Infrastructure Solutions, INC.
- Mept 200 West Madison
- Meraki Collection
- Mercer
- Mercury Business Services LLC
- Mercury Critical Couriers
- Mercury Sightseeing Boats INC
- Mercy Beauty Spa
- Mercy Housing Lakefront
- Meredith
- Meredith Corporation
- Merit Capital Partners
- Merrill Lynch, Pierce, Fenner & Smith Incorporated
- Merz Apothecary, INC
- Messe Dusseldorf North America
- Method Engine, LLC
- Meticulous Massage
- Metro Market
- Metromart
- Metropolitan 1, LLC
- Metropolitan Club
- Metropolitan Diversified Services Corporation
- Metropolitan Family Services
- Metropolitan Housing Development Corporaton
- Metrotrade
- Mezza
- Mf Nutrition Education & Coaching LLC
- Mhn Aco, LLC
- Mi-te Fast Print INC
- Miatco
- Michael Algate
- Michael J. Eggert
- Michaels Chicago Holding Company, LLC
- Michigan 30, LLC
- Micky's Chicken & Fish
- Microsoft Corporation
- Mid-continent Capital
- Mid-continent Capital, L.L.C.
- Midcap Financial
- Midland Ira, INC.
- Midway Broadcasting Corporation
- Midway Building Services, LTD.
- Midway Supplies
- Midwest Academy
- Midwest Air Show, INC.
- Midwest Mezzanine Funds