- The Ice Cream Shoppe
- The Irish Nobleman
- The Joint
- The Jordan Heidenwith Organization
- The Junction
- The Kids' Table
- The Kintsugi Method
- The Laboratory Collective
- The Levi's Store
- The Lief LLC
- The Lotus Lounge
- The Lyons Den
- The Matchbox
- The Metraflex Company
- The Mitz, A Meeting Experience
- The Nail Bar On Division INC.
- The National Anti-vivisection Society
- The Night Ministry
- The Noble Grape
- The North Face #518
- The Now Massage Wicker Park
- The Pasta Bowl
- The Peacock
- The Pear House
- The Pear House
- The Perch Kitchen & Tap
- The Photobooth Strip Club
- The Pixelmint
- The Plantier
- The Pleasure Chest
- The Point
- The Prery
- The Puerto Rican Cultural Center
- The Queen Mary
- The Refilleri
- The Refilleri
- The Revel Room
- The Salt Shed
- The Salvation Army Thrift Store
- The Self-care Spa & Lounge
- The Set Collective
- The Sherwin-williams Company #3940
- The Smoke Hut
- The Space Together
- The Stoop
- The Stu
- The Studio Of James C. Smith
- The Succulent City
- The Sunday Standard
- The T-shirt Deli Co
- The Ups Store
- The Ups Store
- The Ups Store
- The Ups Store #3173
- The Ups Store #5428
- The Ups Store 3173
- The Ups Store 8294
- The Velveteen Rabbit Chicago
- The Violet Hour
- The Vitamin Shoppe
- The Wag Lab LLC
- The Wasteshed
- The Wicker Park & Bucktown Chamber Of Commerce
- The Wormhole
- The Yay Company
- Thee Asian Restaurant
- Thick Chick Vintage
- Thistle & Palm Salon LLC
- Thomas Lima
- Thomas Mccormick Gallery
- Threading Concepts + Spa
- Three Brother
- Three Cities Social
- Three House
- Throop Studio
- Through The Body, INC.
- Throwback Toys Chicago
- Thursday
- Tiffany Aubry Research, LLC
- Tiffozi
- Tiger Auto Parts
- Tigerbyte, INC.
- Time Being, LLC
- Timeless Marine Services, LLC
- Times Past Collectables INC.
- Timothy Benjamin Jack
- Tiny Treats Chicago LLC
- Tip 32
- Tip Top Liquor
- Titan Gym
- Title Boxing Club
- Title Boxing Club
- Tock LLC
- Tokofoto LLC
- Tom Foolery Chocolates
- Tom Robinson Studio/gallery
- Tommy's Guitars
- Topdrawer Shop
- Torque, LTD
- Torres Consulting, INC
- Tortello
- Tortorices
- Total Holistic Creamery
- Total Home Health
- Total Wireless
- Touchpoint Support Services / C/o Ve-amita St Mary Medical Center #56094
- Tous Les Jours
- Township Cleaners
- Traditions Barber Parlor Iii
- Traffic Light Center LLC
- Trajektory
- Tranquil Highs
- Transcending Studios
- Transit Tees INC
- Traspasada #2
- Treads N Tails
- Treats De Cuisine, LLC
- Trek Bicycle Chicago Wicker Park
- Tres Bien Salon
- Tres Jolie Art INC
- Tri-ant, INC.
- Tri-star Catering
- Trial Run
- Tribune 365, LLC
- Tribune Interactive, LLC
- Tribune Publishing Company, LLC
- Tricycle Supper Club
- Trim
- Tropical Smooothie Cafe
- Tropical Smoothies Cafe
- Troscan LLC
- Tryzub Restaurant
- Tsukiji Sushi Sake Bar
- Tts Tacos & Tequilas
- Tuk Tuk Thai Isan Street Food Wicker Park
- Tumans
- Turtle River
- Tutore Italian Cooking School
- Tweeten Fibre Co INC
- Twentyfortyeight LLC.
- Twisted Spoke
- Two Kittens Boutique
- Two Olives Tattoo, LLC
- Tyler Heeney
- Typica Cafe Corp
- U.n.i.c. Skyline Interiors
- Uber Technologies, INC.
- Ukrainian American Club
- Ukrainian Green Store
- Ukrainian Village Shell
- Ukrainian Village Veterinary Center
- Ulta Beauty
- Umbrella Vintage LLC
- Un Amor
- Una Mae's Freak Boutique INC.
- Uncle Ben's Grill
- Uncle Mike's Place
- Uncooked
- Underground Art Market LLC
- Underground Nail Art
- Undeserved
- Unfinished Legacy
- Uni Sushi Bristo
- Uni Uni
- Unique's Doll House
- United Container Corporation
- United Decorating Group, LLC
- United Tires
- United Tires Group & Chicago Tinting
- United Tires Group, INC.
- Univer/soul Power
- Universal Electric Foundry
- University Of Aesthetics/touch Clinic
- Untapped Space, INC.
- Unwaste Shop LLC
- Uprooted Beauty Lounge LLC
- Upscale 606
- Upton' S Naturals Co.
- Ur In, INC. DBA Pisco Peruvian Restaurant
- Urban Canine Doggy Day Spa
- Urban Cleaners
- Urban Designer Butiqe
- Urban Eyecare INC.
- Urban Garden Supply LLC
- Urban Market LLC
- Urban Outfitters
- Urban Remains
- Urban Source
- Urban Source, LLC
- Urbanbelly
- Us Cleaners North, LLC
- Uspih, INC.
- V. Gomez L.L.C.
- V.i.p. Valet Services, INC.
- V's Barbershop
- Vaca's Creamery
- Vagabond Properties, LLC
- Vajra
- Vajra Restaurant
- Valavanis 1, LLC