- Avanti Staffing, INC.
- Avatria
- Avd Development Group LLC
- Avenues To Move Forward
- Avepoint, INC.
- Avi Foods
- Avi The Gem Guy
- Avionos, LLC
- Avison Young - Development, LLC
- Aviva Investors Americas LLC
- Aviva Investors North America Holdings, INC.
- Avli On The Park
- Avra Properties, LLC
- Axa Assistance USA
- Axios Architects & Consultants, LTD.
- Ayayay - Comida Mexicana
- B & G Advertising
- B'love Bath Boutique
- B2b Strategic Solutions, INC.
- Bacci Pizza Franklin
- Backstop Solutions
- Bagel & Bean
- Bagel Miller
- Baguette Jewelers
- Bain & Company, INC.
- Baird & Warner Real Estate INC
- Bakit Box
- Balance & Buzz
- Balanced Flow Wellness LLC
- Balani Custom Clothiers
- Ballet Chicago Company
- Balu Smoothies And More, LLC
- Balzekas Museum Of Lithuanian Culture
- Bamboozables
- Banana Republic #6772
- Banc Of America Leasing & Capital, LLC
- Bandol
- Bank Administration Institute
- Banner Personnel Service, INC.
- Banter Marketplace
- Bao Bae Bakery
- Bar Louie
- Barangaroos Aussie Pies
- Barbri INC
- Barchart.com
- Barclays Capital INC
- Barkey's
- Barnes & Noble Booksellers, INC
- Barnes Global Trade, LLC
- Barter Goods LLC
- Bartlett & Co. Wealth Management LLC
- Basia Hair Design And Spa
- Baskin Robbins
- Batescarey LLP
- Bath & Body Works
- Bayard Advertising Agency, INC.
- Bazaar Meat/cafe By The River/bar Mar
- Bb Jewelry Designs, Incorporated
- Bbella Beauty LLC
- Bbj Group LLC
- Bci
- Bcsp 231 Property LLC
- Bdl Compliance Consulting
- Beacon Financial Services
- Beacon Hill Solutions Group, LLC
- Beam Bike Corp.
- Bear Necessities Pediatric Cancer Foundation
- Bear/byford Joint Venture LLC
- Beard Papa Sweets Cafe
- Bearingpoint Consulting INC.
- Bearingpoint NA LLC
- Beat Kitchen On The Riverwalk
- Beatrix
- Beatrix Market
- Beatrix Market
- Bebon Office Machines
- Bedewed Skin
- Beehive Shoeworks INC
- Beer Under Glass (bug)
- Beezzee
- Bein & Fushi, INC.
- Bel Brands USA
- Belden-stratford Apartments
- Bella Gold Jewelry
- Belly Bowl 28
- Belo Marketing Solution, INC.
- Benesch
- Benjyehuda
- Benjyehuda
- Benjyehuda
- Bensidoun USA
- Bentallgreenoak (u.s.) Limited Partnership
- Berco Company
- Bereket
- Berges Institute
- Berghoff Restaurant
- Berglund Construction Company
- Berkeley Research Group, LLC
- Bernardi Asset Management LLC
- Bernardi Securities, Inc,
- Bert Green Fine Art
- Bespoke Men's Grooming
- Best Bar Crawls, LLC
- Best Boat Cruises, LLC
- Best Cleaners De La O
- Best Events, LLC
- Best Friends
- Best Imaging Solutions, INC.
- Bestbay Logistics
- Bettergodparents
- Beyond Beautiful Books & Beauty
- Beyoutifully Abundant LLC
- Bhavy-j Designs
- Bi Bi Bop
- Bien Me Sabe Venezuelan Arepa Bar
- Big City Optical
- Big Mouf Cosmetics
- Big Shoulders Coffee
- Big Shoulders Coffee
- Big Shoulders Coffee
- Big Shoulders Fund
- Biggby Coffee
- Bike And Roll Chicago
- Billy Goat Tavern & Grill
- Bini Sisters
- Bistro Monadnock
- Black & Veatch Corporation
- Blackhawk Boat Tours LLC
- Blackrock Financial Management, INC.
- Blackrock Investment Management, LLC
- Blacksmith Applications, INC.
- Blackwood Bbq
- Blackwood Bbq
- Blaze
- Blaze Pizza
- Blick Art Materials, LLC
- Bliss Bowls Acai
- Bloc Dispensary Wells
- Blocks Infant Toddler Childcare Center
- Bloom Companies, LLC
- Bloom School Of Jazz, LTD.
- Blue Cross Blue Shield Il (hcsc) Fitness Center
- Blue Diamond INC
- Blue Fire Capital, LLC
- Blue Health Intelligence
- Blue Plate Catering LTD
- Blue Team Con
- Bluegreen Resorts Management, INC
- Blueprint Capital Investments LLC
- Bluestar Case Solutions, INC
- Bmm Logistics INC.
- Boar's Head Cafe
- Boar's Head Cafe
- Bob's Belgian Hot Chocolate
- Bockwinkel's
- Bockwinkels
- Body Energy Club
- Body Energy Club - The Loop
- Bof Il One North Lasalle LLC
- Bofa Securities, INC.
- Bolder Financials LLC
- Boldly Nude
- Bombay Wraps Co
- Bon Appetit
- Bonivino's INC
- Book Driver
- Born Again (consignment)
- Bostrom Corporation
- Bowie Barker Illinois
- Boxwood Ventures, INC
- Bozii Restaurants Corp.
- Bp
- Bp
- Bp Canada Energy Marketing Corp
- Bp Products North America INC.
- Bradley Associates Limited Partnership
- Bradshaw Consultants
- Brain Injury Association Of Illinois
- Brainsurf
- Brandmuscle
- Brando's
- Braviant Consumer, LLC
- Bre 312 Skydeck
- Brewlee, LLC
- Briana Rhodes
- Brianna Jordan
- Briar Hall LLC
- Bridgeport Coffee
- Bridgeport Window Washing
- Bridges Court Reporting
- Bridget Christian Designs
- Bright Horizons
- Brighton Leadership Group
- Brightwok Kitchen
- Brightwok Kitchen
- Brightwork Financial Services, LLC
- Brilliant Solutions Group, INC.
- Brink's Global Services Usa, INC.
- Brito's Jewelry Corp
- Brixton R.e.d.