- Build-a-bear Workshop
- Building Broad Management, LLC
- Builtworlds
- Bulsho Restaurant
- Bulthaup
- Bulu USA
- Bunda Chicago LLC
- Buona
- Burberry Limited
- Burdeen Young & Company
- Burdeen's Jewelry LTD.
- Burdi European Boutique INC
- Burger Consulting Group, INC.
- Burrito Beach
- Burrito Beach # 8
- Burrow
- Burruss Health Services Incorporated
- Burton Place
- Butch Mc Guire's, INC.
- Butler Children's Preparatory
- Buy Buy Baby, INC.
- Buzz Too
- Bwh Security LLC
- Bws Beverage #2
- Bymck
- Byte Cafe
- C M C Consultants INC
- C T S Financial Group
- C.w. Henderson & Associates, INC.
- C/change Communications Incorporated
- Caa Sports
- Cache'
- Cadre
- Cafe Coco Latte LLC
- Cafe Cremerie
- Cafe Descartes Company
- Cafe L'appetito
- Cafe Sophie
- Cafe Sushi-wells
- Cafecito
- Caffe Umbria, INC.
- Caffe' Oliva
- Cal's Corner
- Caleb Skorseth
- California Closets
- Calihan Catering
- Cameel Halim
- Camp
- Campy Pro LLC
- Canada Goose
- Candlelite Lincoln Park
- Cant Believe Its Not Meat Iii
- Cantina Laredo #132
- Cap Gun Collective, LLC
- Cap INC
- Capsule Pharmacy
- Captive Clovers By Julia Jacquez
- Carbit Paint Co
- Carbon Visual Effects LLC
- Carl Hammer Gallery
- Carlisle Wide Plank Floors
- Carlton Technologies, INC
- Carly Jo Duriak
- Carmine's
- Carnegie-sargent's Pharmacy
- Carol H Williams Advertising Agency
- Carol Ryan Fine Art
- Carriage Parking Lot
- Carson's Ribs
- Carters
- Casa Margarita
- Cascio Communications INC.
- Casey Jones
- Cashflow
- Casita Host LLC
- Caspian Oriental Rugs
- Caspian Rugs LLC
- Catalogue House / Motel Bar
- Catara Skin Rejuvenation Spa
- Caterpillar Care
- Catherine Cook School
- Catherine Cook School
- Catholic Charities
- Cava Streeterville
- Cbd Kratom
- Cbp Group
- Cbre, INC.
- Ccc Intelligent Solutions INC.
- Cdm Media Usa, INC.
- Cds, Cleaning Servants
- Cecilia Brauer
- Celeste & Disco
- Celine INC.
- Celllar Door Preserves
- Celtic Crossing
- Centaur Construction
- Centaur Interiors, LLC
- Centennial Crafted Beer & Eatery
- Center For Cultural Interchange
- Center Nails And Spa
- Centered On North
- Centered Pilates LLC
- Centric International, INC.
- Centrum Partners
- Centrum Realty And Development, LLC
- Cerulean World Travel
- Ceu Technologies,inc.
- Cgi Technologies And Solutions INC
- Ch Carolina Herrera
- Chabad Day Care
- Chai City Teas, LLC
- Chakra & Crystals Spiritual Boutique
- Chalet Chicago
- Chanel, INC.
- Change In Point LLC
- Channing's Studio And Spa
- Chapel Street Cafe & Restaurant
- Charles Ifergan Coiffures LTD
- Charles Of The Newberry LTD
- Charlie Baggs Culinary Innovations
- Charlie Greene Studio
- Chartwells
- Chase Garrett
- Chatsworth Associates
- Che Sguardo INC
- Checks And Balances, INC.
- Cheeseburger In Paradise
- Cheesecloth & Buttermilk, INC.
- Chef Art Sm Ith's Reunion Restaurant
- Cheryl?s Nut Butters
- Chestnut Cleaners
- Chi Consulting Services LLC
- Chi-town Parking Solutions INC.
- Chicago Blackhawks Foundation
- Chicago Brass, INC.
- Chicago Center For Facial Plastic Surgery
- Chicago Children's House
- Chicago Childrens Museum
- Chicago Chop House
- Chicago Clean & Mend
- Chicago Clean & Mend
- Chicago Cobblers
- Chicago Crime Tours And Experiences LLC
- Chicago Cubs Baseball Club, LLC
- Chicago Cut Steakhouse
- Chicago Dance Studio
- Chicago Dancemakers Forum
- Chicago Dental Society
- Chicago Downtown Marriott
- Chicago Duffy LLC
- Chicago Estate Advisors
- Chicago Fire Football Club
- Chicago Fire Foundation
- Chicago Fly Fishing Outfitters LTD.
- Chicago From The Lake
- Chicago Gallery News, INC.
- Chicago Hair Imports
- Chicago Haircuts & Shaves
- Chicago Haircuts & Shaves LLC
- Chicago Health Maple Street
- Chicago Heating And Cooling
- Chicago High School For Agricultural Sciences
- Chicago Humanities
- Chicago Internal Cleansing, INC.
- Chicago Literacy Studio LLC
- Chicago Live Events
- Chicago Mma
- Chicago Northside Mri Center
- Chicago Northside Storage - Old Town
- Chicago Pacific Capital, L.p
- Chicago Parking Solutions
- Chicago Parks Foundation
- Chicago Premier Suites
- Chicago Public Radio
- Chicago Q
- Chicago Radio Assets, Llc/chicago Fm Radio Assets, LLC
- Chicago Review Press
- Chicago Royal Parking Management LLC
- Chicago School Of Shoemaking
- Chicago Segway Tour
- Chicago Shakespeare Theater
- Chicago Sinai Congregation
- Chicago Smsa Limited Partnership D/b/a Verizon Wireless
- Chicago Souvenir Company
- Chicago Spark Design
- Chicago Sport And Social Club, INC.
- Chicago Sports & Novelty
- Chicago Strength
- Chicago Teahouse
- Chicago Trolley Co.
- Chicago Twenty Something
- Chicago United Industries,ltd.
- Chicago Valet Parking
- Chicago Valet, INC.
- Chicago Winery
- Chicago_recording Company
- Chicago's Dog House
- Chicagoland Chamber Of Commerce Foundation
- Chick-fil-a At Michigan Avenue (il) In-line
- Chick-fil-a Loyola Water Tower