- Cream And Concrete
- Create & Capture Studios
- Creative Circle, LLC
- Creative Mirror Designs, INC.
- Crepe Nation Express
- Cresco Labs, LLC
- Cresta Communications, INC
- Cristina Nunez
- Crosell Ii
- Cross Connect Services LLC
- Crosslyne Corporation
- Crosstown Fiber Il LLC
- Crowell & Moring LLP
- Crown Home Health Services INC.
- Crowned Tree Atelier LLC
- Crumbl Cookies Chicago Old Town
- Crushed By Giants
- Cryoeffect
- Crystal Clean Solutions
- Crystal Cleaners
- Crystal Fantasies
- Crystal Nails
- Crystal Room Chicago
- Crystal's Gallery
- Cullen Construction Management
- Culligan
- Culligan Collective LLC
- Cupitol Coffee & Eatery
- Curo Management LLC
- Currency Exchange International
- Curtis Blake
- Cushing And Company
- Cushman & Wakefield U.s., INC.
- Custom Eyes
- Cutler Oil & Gas Corporation
- Cutting Club
- Cuub
- Cuvee
- Cvs/pharmacy #11090
- Cvstom Co.
- Cw Brand Solutions LLC
- Cynthia Inch INC.
- D4 Irish Pub & Cafe
- Daboul Avenue
- Dailey Woodworking
- Daily Burn Candle Studio
- Daily Planet Productions, LTD.
- Daisy Moon LLC
- Dak-remington M. Confidant
- Dalal Food W Liquor INC
- Dame Creative
- Damen 4 Management Of Illinois, LLC
- Dan Rak Design Group
- Dana Goodsell
- Dana Reed Designs
- Danceworks Chicago
- Dancing Fingers Authentic Chinese Massage
- Dancing Fingers Authentic Chinese Massage
- Dani Enterprises LLC
- Daniel Eggert
- Daniel Levy Jewelry
- Daniel Management Group
- Daniel Moja
- Dao Thai Restaurant
- Daphnia Studios
- Dar Baklava, LLC
- Dar Consulting
- Darcy Bonner & Associates
- Darida Fine Art
- Darquo
- Darren Jones
- Dashmart / The Corner Market By Caviar
- Dashty's Convenience Store
- Data Products LLC
- Datra, INC.
- Daubenspeck & Associates Limited
- Dave's Hot Chicken
- David Capital Partners, LLC
- David Colburn
- David Conklin
- Davis Furniture Industries INC
- Day & Knight L.L.C.
- Dbc Brand
- Dconstruct
- Dcp 3 LLC
- Dd&s INC.
- Ddb Chicago, INC
- Ddt Data Processing, LLC
- De Giulio Kitchen Design
- Deangelo Construction Management Company
- Dearborn Cleaners, INC.
- Dearly Beloved Chicago
- Deaurora
- Debevic's Restaurant
- Deborah's Place Ii
- Debra Siena Leadership Solutions
- Decision Models & Systems, INC.
- Declan's Irish Pub
- Dedon INC.
- Deep Purpl
- Defined Medical Aesthetics
- Del Toro Creative Studio LLC
- Delaware Cleaners
- Delaware Food And Liquor
- Delecter Maurice Clark
- Deleteking850
- Delle Amiche
- Delos Therapy
- Demi Aesthetics
- Demos Cleaners
- Denise Karabowicz
- Dennis Bartolomei
- Dental Assisting National Board, INC.
- Dermalogica
- Design Atelier Chicago
- Design Guild INC
- Design Industries Foundation Fighting Aids/chicago, INC.
- Design Studio
- Design Within Reach, INC
- Design2rave LLC
- Designers Linen Source
- Designs By Annie
- Designs By Ming INC.
- Destination Xl # 9011
- Detailed Cleaning INC.
- Devbridge
- Devil Dawgs Gold Coast
- Dewitt House
- Dfrey Designs
- Dhm Growth Capital LLC
- Diamond Parking Service INC.
- Diana Rodi Hall & Associates, LLC
- Dick's Sporting Goods
- Digestive Health Foundation (dhf)
- Digital Titan Productions
- Dimitra's Bridal And Accessories
- Dina Nails LLC
- Dineamic Catering, LLC
- Dinner With A View
- Dino Celik
- Diplomatic 1750
- Dippin' Dots Ice Cream
- Direct Repair, INC.
- Dirtt Environmental Solutions, INC.
- Disco Pancake
- Discover Strength
- Disney Store
- Disposable Protective Gear
- Dita Day Spa
- Divadance Chicago
- Division Clark Curr Exch
- Division D
- Division On Delaware, LLC
- Dizziness Solutions, LLC
- Dj's Great Room / Layla & Ringo's
- Dk Chestnut LLC
- Dk Nielsen
- Dlc Illinois, LLC
- Dls Policy Solutions
- Dmdl, INC.
- Dna&stone
- Dns Capital, LLC
- Do Good Adventures
- Do-rite Donut Kiosk
- Do-rite Donuts
- Doc B's
- Doc B's Fresh Kitchen
- Doc B's Fresh Kitchen LLC
- Dog Hotel And Daycare LLC
- Dolce & Gabbana
- Dolce Ville
- Dolci Amori
- Doll In A Dash
- Dollop Coffee Bar
- Dollop Coffee Bar
- Dollop Coffee Company
- Dollys Steak Hoagies Delivery
- Dom's Kitchen & Market
- Doma
- Domain Design LLC
- Domain Homesharing Management LLC
- Domino's
- Domino's #2881
- Dominos
- Don Doughman & Friends
- Donco Paper Supply Co.
- Donco Paper Supply Co.
- Doot-russell, INC.
- Dorsa Babaei
- Dosbros Fresh Mexican Grill
- Double Fun
- Double Take Salsa
- Doubletree By Hilton Chicago - Magnificent Mile
- Dough Bros
- Dovid Simcha Meir Gubin
- Downtown Bp & Subway
- Downtown Childrens Learning Place
- Downtown Dogs
- Downtown Entertainment, LLC DBA Hq Beercade Ii
- Downtown Food Mart