- Jorge Luis Bustillos
- Joy Yee Noodle
- Jssi Advisory Services, LLC
- Jssi Management Enterprises, LLC
- Jssi Parts, LLC
- Juliet Tan Floral Design
- Jump The Broom Cleaning Company
- Junior Chefs Kitchen
- Just Don Retail
- Just Kate
- Just Salad
- K - Kitchen
- K + P Advisory
- K.k.t. Group Services
- K.r. Miller Contractors, INC.
- K&l Commercial Cleaning LLC
- Kaathis LLC
- Kabobchi
- Kadeya
- Kailo Bar
- Kaiser Tiger
- Kalderos
- Kama
- Kantar
- Kaplan North America LLC
- Kashmir
- Kate & Jan Hot Dogs
- Katherine Mahon
- Kathryn's Soul
- Kavi Gupta Gallery
- Kay Jewelers #4827
- Kayla Mae
- Kayne Anderson Senior Credit Advisors
- Kaytie's Kafe LLC
- Keep It Clean
- Keg N Bottle West Loop
- Kehoe Designs, INC
- Keith Stewart Fruit Products
- Kelis Kouture
- Keller Machine Co
- Kelly Mitchell Group
- Kenneth Bernard Durant
- Kenneth Ensota LLC
- Kensington School Of West Loop
- Kentucky Fried Chicken #5290
- Kenya Deshune Henry
- Kerasotes Showplace Theatres
- Kerry Mitchell Brown, LLC
- Kevin Trunkett
- Keystone Automotive Industries INC.
- Kf Partners, LLC
- Kgberry, LLC
- Kido International Preschool, West Loop
- Kids Stem Studio
- Kikwetu Coffee Company
- Kimberly Mcbride
- Kimberly-clark Corporation
- Kimflex Services, LLC.
- Kimura Sushi
- Kindle Communications
- Kindler Coaching
- Kinema Fitness - Boxcar
- King Auto Repair & Body Shop
- Kingdom Farms Wholesale Meats, INC.
- Kinton Ramen 1
- Kinzie Cleaner's
- Kinzie Lacquer Spa LLC
- Kinzie Shine Spa
- Kismet Coffee Roasters
- Kitchen Chicago, LLC
- Kitchen Tune-up Chicato City Central
- Kiwi's Boutique
- Klay Oven Kitchen
- Knoll, INC.
- Knr Innovations LLC
- Kobamont LLC
- Kohan Japanese Restaurant
- Koi Noodle
- Kolcraft Enterprises, INC.
- Komunity Kombucha LLC
- Kong Dog
- Kororin LLC
- Kraft Heinz Foods Company
- Krispr Communications
- Kristine Fallon Associates
- Krueger International, INC.
- Ks Rocket Pops
- Ktmine
- Kuma's Corner
- Kumiko
- Kurtea Life LLC
- Kvadrat
- Kvl Flower Ball
- L & W Supply Corporation
- L J Sheridan & Co
- L.a. Fitness International, LLC
- L.e.k. Consulting LLC
- L'atelier 17
- L&l Academy And Preschool Wl, LLC
- La Columbe
- La Fournette, LLC
- La Josie
- La Lagartija
- La Lagartija Taqueria
- La Sardine, INC.
- La Serre / Bar La Rue
- La Tan
- La Victoria Barra + Cocina
- Lab Corp
- Labriola Bakery And Cafe
- Labriola Italian
- Ladybug Mdl Van Buren 4 LLC
- Lake Street Barbering Company
- Lake Street Showroom
- Lake Western Citgo
- Lalo's Mexican Restaurant
- Lamination Specialties
- Landcare USA L.L.C.
- Landor, LLC
- Language Loop L.L.C.
- Latin Rhythims Academy Of Dance & Performance
- Latin Street Music & Dancing
- Latitude Chicago
- Laural Supply Corporation
- Laurel Tapia
- Lauricejewels
- Laurie & Brennan, LLP
- Lavi Decor And Cleaning Services
- Laz Parking
- Lcw Consulting
- Le & Luca Salon
- Le Petit Sucre
- Leaders 1354
- Leading Men Fiber Arts
- Leah M Brown
- Leap Innovations
- Leapfrog Product Development, LLC
- Lee Weitzman Furniture, INC.
- Lee's Auto Clinic
- Left Bank Cleaners
- Legacy Parking
- Legal Spend Holdings LLC
- Legendary Art Gallery
- Legendary Lash & Nail
- Legends C-2, LLC
- Leighfisher INC.
- Lemaster Family Kitchen
- Lenore's Kitchen Catering INC.
- Leopardo Companies, INC.
- Lerch Bates INC.
- Leslie Jones & Associates INC.
- Levain Bakery
- Levenfeld Pearstein
- Levy Premium Foodservice Limited Partnership
- Lewis Paper Place
- Lexington Betty Smoke House
- Liberty Advisor Group LLC
- Liberty Hardware Mfg. Corp.
- Lico Street
- Life Loves Health Coaching, LLC
- Life Storage
- Lifeline Home Care Providers
- Lifestart Wellness Network
- Lifestart Wellness Network
- Lifestart Wellness Network
- Light Iron Digital, LLC
- Light Modifiers Rental
- Liina
- Lil Bucks
- Lil Sweet Treat
- Lil' Kickers Illinois
- Lil' Scholars Learning Center
- Lillie Ann's
- Lillieann's Massage And Skin Care
- Lily Pad Nursery & Preschool
- Lily's Talent Agency, INC.
- Lime
- Limelight
- Limitless Towing & Recovery Company
- Lin Bader Design
- Lindsey's Ice Cream
- Linkedin Corporation
- Linn-mathes INC
- Lip Lab
- Lisa Jordan
- Lito's French Market
- Little Brothers Friends Of The Elderly
- Little Corner Store
- Little Goat Diner
- Little Joe's At The Ballpark
- Live 2 Give In Home Healthcare LLC
- Living Doll INC
- Living Water Tea House
- Lkq Corporation
- Llama Llama Ding Dong Yarn
- Lml Construction LLC
- Lmnop Tattoos
- Lobby Shop
- Local Edition LLC
- Lock And Key Pastry