- Kay Jewelers Outlet #4138
- Kaya Build
- Kc Eats & Treats
- Kc Jewelers, INC.
- Kcura LLC
- Keeper Security INC
- Kehoes Designs, INC
- Kelly Mitchell Group
- Kelly Services, INC
- Kelly, Scott And Madison, INC.
- Kellys The Flower Shop
- Kemeny Overseas Products Corp
- Keming Li Design LLC
- Kemper Corporation
- Ken Antles
- Kendra Scott Design
- Kennedy Wilson Properties
- Kensington Research And Recovery, INC.
- Kerasotes Showplace Theatres, LLC
- Kermess
- Keys To Time
- Keystone Consulting Group LLC
- Kfa, INC.
- Kforce
- Khnpusa
- Kids + Company
- Kids First Chicago For Education
- Kids Foot Locker #46426
- Killerspin, LLC
- Killerspinville
- Kilwins Chocolates Fudge And Ice Cream
- Kimberly Koetter
- Kindling-downtown Cookout & Cocktails
- Kingdom Construction Of Chicago INC.
- Kinzie Capital Partners
- Kirkpatrick Price INC.
- Kitchen United INC
- Klatt Employment Service, INC.
- Knowflex LLC
- Knuckleheads Boxing And Family Fitness
- Kobamont LLC
- Kobotech
- Komodo Health, INC.
- Kong Dog
- Korn Ferry (us)
- Kovitz Insurance Services, LLC
- Kovitz Investment Group Partners, LLC
- Kpop Nara
- Kraft Heinz Foods Company
- Kramer Van Kirk Credit Strategies LP
- Kramers Health Foods
- Kriser's Natural Pet
- Krispr Communications
- Krispy Kreme
- Kundalini Yoga In The Loop
- Kvk Services LLC
- Kyndryl, INC.
- L & J Cleaning Solutions Corporation
- L & K Jewelers
- L A Fitness And Pro Results
- L G Jewelers, INC
- L Stop Tours LLC
- L Street Collaborative, LLC
- L. A. Tan & Lavie Massage
- L.c. Williams & Associates, LLC
- L.h. Selman, LTD.
- L.s. Gallegos & Assoc INC
- L'occitane, INC
- L&d Training Concealed Carry LLC
- L7 Hotel
- La Brasileira Massage LLC
- La Catedral Cafe & Restaurant
- La Cocina
- La Cocina Mexican Grill, LLC
- La Cocina Restaurant & Bar
- La Quinta Inn & Suites
- La Quinta Inn And Suites
- La Quinta Inn And Suites
- La Quinta Inn And Suites Chicago Downtown
- La Ron Jewelers
- La Salle Cafe Luna, INC.
- Labamba Jalisco, INC.
- Labcorp
- Laf
- Lago Asset Management
- Lakefront Children's Academy, L.L.C.
- Lakefront Financial Solutions LLC
- Lakeshore Internet LLC
- Lakeshore Securities L.P.
- Lakeshore Sport & Fitness
- Lakeshore Sport & Fitness
- Lakeshore Talent LLC
- Lakeview Market Food, Wine & Spirits
- Lambent Risk Management Services, INC
- Lamonica Glink & Sprague LLC
- Lancaster Cleaners
- Land And Lake Kitchen
- Landau
- Landau Costume Jewelers
- Landmark Jewelry
- Landmark Worldwide LLC
- Landmarks Illinois
- Landry Oden
- Lao Sze Chuan Grant Park
- Laramar Managment Services, LLC
- Larger Vision LLC
- Lasalle Capital Group LP
- Lasalle Consulting Partners, INC
- Lasalle Hotel Chicago
- Lasalle Investment Management, INC.
- Lasalle Newsstand
- Lasalle Staffing , LLC
- Laughlin Constable
- Lavender Gelato & Cafe
- Law Center For Better Housing
- Lawrence Ragan Communications
- Lawyers Assistance Program, INC.
- Lawyers For The Creative Arts
- Lawyers Lend-a-hand To Youth Program
- Laz Parking
- Lbs Limited Partnership
- Ldarnells Insights, LLC
- Le Gemme Masterpiece, INC.
- Le Melange Fashion Collection LLC
- Le Meridien Essex Chicago
- Lea French Cafe
- League Of Chicago Theatres
- Leah Michele Brown
- Leap Learning Systems
- Leara Gem, INC.
- Learnship Corporation
- Leathercare Shoe Shine And Repair Shop
- Leave It To Us Events INC
- Leave No Veteran Behind
- Ledesma Studio, LTD.
- Left Coast Food + Juice
- Legacy Parking
- Legacy Rail Operations LLC
- Legal & General Investment Management America, INC.
- Legal Council For Health Justice
- Legal Video Services
- Legalpeople/the Partners Group
- Legend Of Time
- Leggett & Platt Global Services
- Leggett & Platt Transporation
- Leidos Engineering, LLC
- Len Martens
- Lendlease (us) Construction INC.
- Lenscrafters #3973
- Leo A Bachrach
- Leo Burnett Co INC
- Leona's Pizzeria
- Ler Cleaners
- Lessen LLC
- Levata Us, LLC
- Level Extensions
- Level K Events LLC
- 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
- Lido Advisors, LLC
- Lids #6186
- Lifestart At Central Park
- Lifestart Midwest, INC.
- 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
- Lincoln Property Company Commercial LLC
- 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