- Legal Video Services
- Legalpeople/the Partners Group
- Legend Of Time
- Leggett & Platt Global Services
- Leggett & Platt Transporation
- Leidos Engineering, LLC
- Lendlease (us) Construction INC.
- Lenscrafters At Macy's #3342
- Leo A Bachrach
- Leo Burnett Co INC
- Leona's Pizzeria
- Ler Cleaners
- Levata Us, LLC
- Level Extensions
- Level Office
- Level Office
- Level-(1) Global Solutions, LLC
- Level-1 Lvs LLC
- Levenfeld Pearlstein
- Levy Corp
- Lexis-nexis
- Lh Spa
- Libertea
- Liberty 35 Wacker LLC
- Lids #6423
- Lifestart At Central Park
- Lifestart Wellness Network
- Lifestart Wellness Network
- Lifeway Kefir Shop
- Lifeworks C/o Capital One
- Light Touch Designs, INC.
- Lighten-gale Group
- Lightoller
- Lightup Media LLC
- Lillian Dion Salon
- Limelight
- Lincoln Energy Group LLC
- Lincoln Financial Advisors
- Lincoln International LLC
- Lincoln Property Co.cse
- Lincoln Property Company
- Lindbergh Block 37 LLC
- Linebarger, Goggan, Blair & Sampson, LLP
- Linwar LLC
- Lion Parking
- Lion Re:sources, INC.
- Lipman Hearne
- Lis Jewelry Manufacturing INC
- Lito's Empanadas Revival Food Hall
- Little Smoque
- Live Nation Chicago
- Livetowynn
- Lizzano
- LLC
- Llt Group
- Lm Catering
- Lo Spa & Nails Lounge
- Lo Spa And Nails
- Lo Spa And Nails
- Loan Ecosystem LLC
- Lobby Newstand
- Loft 2 Cleaners
- Loft Outlet #3118
- Loft1cleaners
- Logical Information Machines, INC.
- Logistics Property Company, LLC
- Londonhouse Hotel
- Longshore Capital Partners
- Loop Auto Parks INC
- Loop Capital Markets LLC
- Loop Clerking Service INC
- Loop Currency Exchange, LLC
- Loop Ii Currency Exchange, INC.
- Loop Mini Mart
- Loop Nail Spa
- Lorena Garcia
- Lorien
- Lottobot
- Lotus Banh Mi
- Lou Malnati's Pizzeria
- Louis Vuitton
- Love & Promise Jewelers
- Lover's Lane
- Lowcountry 2
- Loxx Hair Chicago
- 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
- 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
- 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.
- March Of Dimes
- Marcia Reynolds
- Marex North America, LLC
- Mari Designstudio LLC
- Maria Lagios, Soprano
- Mariano's Fresh Market #8503
- Mariela
- Mark Anthony Brewing Inc,
- Mark Richard Engel LTD.
- Mark Sheeran
- 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 INC.
- Mbs Floor Design
- Mc Registered Agents
- Mccorkle Litigation Services, INC.
- Mccormick & Schmick's Seafood Restaurant
- Mccreadylaw