- Standing Passengers INC.
- Stanleys Grill
- Stans Donuts
- Star Lounge Coffee Bar
- Starbucks Coffee # 9426
- Starbucks Coffee #2443
- Starship Salon
- Stax Cafe
- Stay 424
- Steely Boutique
- Steiner Electric Company
- Steingold's Wholesale
- Stella's Haven Spa
- Stella's Tap
- Stellar Cycleworks LLC
- Stem & Shaker
- Stems
- Sterling Bay Property Management
- Steve And Kate's Camp
- Steve's Flower Market
- Stickynote Creative, LLC
- Stiletto Dance Studios LLC
- Stirling Tai Chi Society
- Stone Edge INC
- Stone Profit Systems INC
- Storage Star
- Storage Star
- Store B
- Stories Collective
- Stretch Lab Wicker Park
- Studio 11
- Studio 2020 Chicago
- Studio 836
- Studio Blue INC
- Studio E
- Studio K Design
- Studio One Ink Tattoos
- Studio West Pilates
- Studio Wooden Gallery
- Studio.c
- Sub Station Food Mart
- Subterranean Cafe & Cabaret
- Subway
- Subway
- Subway
- Subway
- Subway
- Subway At Norwegian American Hospital
- Suds Laundromat
- Sugaring Nyc
- Sugoi Sweets
- Sultan's Market
- Sun Rey Cafe
- Sunkiss Spa
- Sunny G Stitches
- Sunrise Cafe Restaurant
- Sunshine Cleaners
- Super Submarine
- Super Submarine
- Superior Audio Systems
- Superior Street Center For The Arts
- Superstar 23
- Supreme
- Surface Experts Chicago Near North
- Surroundings By Colin
- Sushi
- Sushi Hoshi
- Sushi Para M
- Sushi Taku
- Sushi+
- Sushineishappiness
- Suzann Kletzien Design INC
- Suzanne Hojara
- Suzanne Hojara
- Sven Alescha Forner
- Swap & Strut
- Sweat Sessions Studio
- Sweep Home Chicago INC.
- Sweet Petunia Child Development Center
- Sweet Tooth Chicago
- Sweetgreen
- Swig
- Syte Corporation
- Sytsy Salon Loft
- T-mobile
- T-mobile Limited
- T-pro Spa, INC.
- T. Mari Gallery
- Taan
- Tabb's Food & Liquor INC
- Tabu Tacos/il Tetto
- Taco And Burrito Express #3
- Taco Bell Cantina
- Taco Firme
- Taco Palate
- Taco Pros
- Tacombi
- Tailor Barber Co.
- Tailored Strength
- Takie Outit
- Takie Outit
- Takito Kitchen
- Takorea Cocina / Concealed Burgers
- Tala Gallery
- Tamar Myers
- Tamar Myers
- Tamed Blow Dry & Beauty Bar
- Tandoor Char House West Town LLC
- Tao Tea
- Taqueria El Heredero Ii LLC
- Taqueria El Jardin
- Taqueria Super Burrito INC
- Tarboush Mediterranean Grill
- Target Store T-3307
- Tarnish
- Taste Of Marrakech
- Tatu Tattoo INC
- Taxim
- Taylor Excavating & Construction, INC.
- Taylor Nicole Bratton
- Tbd
- Tbfs Investments LLC - 1220
- Tdc Mma & Fitness LLC
- Teamlogic It 61315
- Teams Design Usa, INC
- Tecalitlan
- Ted Knup
- Tee Mart Decorated Apparel LLC
- Tego Nail Spa Boutique
- Tejano's
- Tempesta Market
- Temporis
- Tesla Motors, INC.
- Tesoura Hair Salon
- Tetiana's Beauty
- Thai Food Cuisine INC.
- Thai Lagoon Restaurant
- Thai Orchid Spa
- Thalia Hall
- That G Studio
- The Aberdeen Tap
- The Aloe Shoppe
- The Annex
- The Ap Experience
- The Arbory
- The Beauty Beautique LLC
- The Bedford
- The Best Lashes
- The Big Mini
- The Big Uglie
- The Blind Robin, INC.
- The Blommer Chocolate Co
- The Boil Cajun Seafood
- The Boiler Room
- The Bongo Room
- The Breakfast Club INC
- The Brow Fairy Studio
- The California Clipper
- The Cbd Hutch
- The Center Of Order And Experimentation
- The Chakra Boutique
- The Circle Salon
- The Comedy Clubhouse
- The Condo Connector
- The Conservation Center
- The Custom Shop
- The Dandy Crown
- The Delta
- The Den Theatre
- The Drop Inn / Sushi By Scratch Restaurants: Chicago
- The Elevator Consultants
- The Exchange Buy Sell Trade
- The Flame
- The Flower Firm LTD
- The Frontier
- The Gallery 630
- The Gallery Cafe
- The Gallery Chicago
- The Garage Chicago
- The Gardner School
- The Glamour Dungeon
- The Glowing Chakra
- The Goddess And Grocer
- The Golden Triangle
- The Great Room LLC
- The Green Room,inc.
- The Grooming Gallery
- The Hat
- The Healing Room
- The Hi-lo
- The Hidden Gem
- The Home Depot #1912
- The Ice Cream Shoppe
- The Irish Nobleman
- The Joint
- The Jordan Heidenwith Organization
- The Junction
- The Kids' Table
- The Kintsugi Method
- The Laboratory Collective