- Lift Chicago
- Lighthouse Artspace Chicago
- Lighthouse Systems INC
- Lightitech
- Lightning Construction
- Lightology
- Lil' Ba-ba-reeba!
- Lilly Group, INC.
- Linak U.s.
- Linas Dailide
- Lincoln Clean Energy
- Lincoln Park Capital, LLC
- Lincoln Park Preschool
- Linda Levinson Designs INC.
- Lindo System INC
- Linguanational Translations, INC
- Lion Parking
- Liquor Box
- Lira Center
- Lira Guzi Salon Co.
- Lisa Schenkman
- Lisa Simone Skincare LLC
- Lisa's Boutique Catering, LLC
- Lisa's Nail Salon INC.
- Liska + Associates INC.
- Listing 2 Leasing, LLC
- Lite
- Lito's Revival
- Live Clean INC.
- Livewater Trading LLC
- Livingart By Terry
- Livingstone Partners LLC
- Lizzano
- Lizzie Mcneill's
- Lk Growth LLC
- Locked And Layered LTD.
- Loewe LLC
- Lofology
- Loft # 1879
- Loftus & O'meara Staffing, INC.
- Logicgate, INC.
- Logistical Resources, LLC
- Londo Mondo LTD
- Lookingglass Theatre Company
- Loom & Line Barber Theory
- Lorenzo's Frozen Pudding
- Lori's Gifts #376
- Loske Marine Services LLC
- Lost Larson
- Lou Malnati's Pizzeria
- Louis Vuitton
- Lovers Playground
- Lovesac
- Lowell House Condominium Assoc
- Lowitz And Sons, Incorporated
- Loyal Spa La Salle INC
- Loyola University Of Chicago
- Loyola University Watertower Store #1122
- Lr Contracting Co
- Lr Managment Company
- Lsp Cleaners
- Luca Lanzetta, LLC
- Lucid Group Usa, INC
- Lucky Skye Graphics
- Lucky Strike Lanes
- Lucky Strike Lanes
- Luft Balloons
- Luke Welsh
- Lululemon
- Lume Hubbard LLC
- Lumiere Children's Therapy, LLC
- Luminaire INC
- Luna Flowers - Gold Coast
- Lunan Corporation
- Lure Fishbar Chicago
- Lush Cosmetics Ny LLC
- Lush Wine & Spirits
- Luxbar
- Luxe Spa Boutique
- Luxury Drip Auto Spa
- Luxury Eyesight
- Luxury Living Real Estate
- Lwnllc
- Lyfe Kitchen
- Lyfe Kitchen
- Lyfe Kitchen
- Lynx Project
- Lyon Family Foundation
- M Burger
- M Carter Consulting LLC
- M Of Illinois INC
- M.a.c. Cosmetics INC.
- M1 Holdings LLC
- Mac Parking, INC.
- Macerich Management Company
- Macy's
- Madereal
- Madewell, INC
- Mado Healthcare-old Town
- Mado Management
- Mado Realty LLC
- Maestroshave
- Mage Education
- Maggiano's Banquets On Grand
- Magic Camp
- Magic Factory Lofts
- Magical Mystery Tours
- Magnetic Attraction
- Magnificent Milestones, INC.
- Magnifique
- Magnolia Crescent Orchards And Non-alcoholic Winery
- Mahler Enterprises
- Majestic Beast, LLC
- Majestic Paws
- Make A Wish Illinois
- Makeous
- Malika Rachelle Designs
- Mama Milano
- Mamagreen LLC
- Mangel Florist & Gifts
- Mango Ny, INC.
- Manifesto
- Mannington Commercial
- Mansion On Rush
- Manuela Guidi, LLC
- Maple & Ash/ Eight Bar
- Mar Beauty Lounge LLC
- Marc Jacobs Int.
- Marc USA
- Marcel Florist
- Marcel Media
- Marchesa
- Marcus
- Marcus Evans, INC.
- Margaret Dyer
- Margie Korshak INC
- Marianne Strokirk Salons
- Mariano's #8534
- Marie Co Studio
- Marieta's Spa & Salon
- Mario Tricoci Hair Salons & Day Spas, LLC
- Mario's Table
- Mariya E Williams-oster
- Mark Anthony Brewing INC.
- Mark Bernard Czyzewski
- Mark Gleberzon
- Mark Goodman & Associates, INC.
- Mark Hersch Photography
- Mark Kaplan
- Mark Mckinney
- Market Data Corporation
- Marketing Information Resource, INC
- Marlowe
- Marquette Partners LP
- Marrow Fine
- Mars Global Services
- Marshall Pierce & Company
- Marshall's Landing
- Marshalls #690
- Mart News
- Marwen Foundation, INC.
- Mary Johnston Paintings
- Mary Mary
- Mary Murphy
- Mary Walter
- Mason Avenue Investments
- Massage Bliss And Bodywork
- Massage Envy Spa
- Master Valet Parking
- Masterpiece Kitchens
- Mastro's Steakhouse
- Matcha Cita
- Materials Marketing, LTD
- Matilda And Clandestino
- Matthew Gorman
- Matthew S Cabrera
- Mattress Firm Inc., #602001
- Maude Studios
- Maureen Shinners, L.L.C.
- Maven Esthetics LLC
- Maven Global Markets Derivatives LLP
- Maven Global Markets LLP
- Maven Global Markets Trading LLP
- Maven Securities Us Limited
- Maxine
- Maxmara
- Mayana Designs Co
- Mayweather Boxing + Fitness
- Mccann Health Medical Communications, INC.
- Mccollum Photography
- Mcdonald's
- Mcdonald's
- Mcdonald's
- Mcdonald's
- Mcdonald's
- Mcdonalds Restaurant # 14173
- Mcdonough Enterprises, LTD
- Mce Clinical LLC
- Mcgrath Lexus Of Chicago
- Mcm Chicago