- Noelle Mitchell
- Noitam Incorporated
- Nomaverse, INC.
- Nomura America Services, LLC
- Nomura Securities International, INC.
- None
- None
- None
- Noodles And Company
- Norc
- Nordex Usa, INC.
- Nordstrom Rack
- Norlease INC
- Norma J. Mcadams
- Norman's Bistro
- North American Association Of Food Equipment Manufacturers
- North Square Investments, LLC
- North Star Invest. Ser.
- North Star Investment Management Corporation
- Northern Lights Direct LTD
- Notre Dame Club Of Chicago
- Novantas, INC.
- Noyes Steinman Companies, LLC
- Numerator
- Nutella Ferrero & Nutella Cafe
- Nuveen Securities, LLC
- Nvisia LLC
- Nxt Capital, LLC
- O.k. Cleaners
- O'brien's Riverwalk Cafe
- O'neil's Bar & Grill Corp
- Oai
- Oak Park Wholesale
- Oak Ridge Investments, L.L.C.
- Oasis Cafe
- Objective Arts, INC.
- Objective Arts, LLC
- Ocean Prime
- Ocean Tomo
- Ochi Consulting + Partners
- Ocient Holdings LLC
- Ocient INC
- Ocorian
- October Three Management Services, INC.
- Odile Swift
- Ofer Mizrahi Diamonds, INC.
- Off The Tracks
- Office Liquidation Services
- Office Of Experience LLC
- Office Of Modern Composition LLC
- Okay Cannabis Dispensary
- Okta, INC
- Old Navy # 3058
- Old School Vending
- Old Town Pour House
- Olenick & Associates
- Olga's Day Spa., LLC
- Olive Mediterranean Grill
- Olive Park Consulting Group, LLC
- Oliver Wyman Actuarial Consulting, INC.
- Oliver Wyman, INC.
- Olympian INC
- Omar Medical Supplies
- Omar Supplies
- Ondemand Movers USA
- One Hope United
- One North Kitchen And Bar
- One North Wacker LLC
- One Parking 150 Roosevelt, INC.
- One Parking 222 Lasalle, INC.
- One Parking 706, LLC
- One Parking 722, INC.
- One Parking Franklin, INC.
- Onechicago, LLC
- Onegoal
- Onetrack.ai
- Onl Properties LLC
- Onshore Networks Of Illinois, L.L.C.
- Onshore Security LLC
- Ontime Expediting
- Open Health
- Opensity Solutions
- Opportunity Financial, LLC
- Optimum Investment Advisors, LLC
- Optiver Clearing LLC
- Optiver Execution Operations LLC
- Optiver Execution Services LLC
- Optiver Services Us LLC
- Optiver Trading Us LLC
- Optiver Us LLC
- Opus Construction Solutions
- Oracle America, INC.
- Orangetheory Fitness
- Orangetheory Fitness
- Orbit Solutions INC
- Orchard First Source Capital, INC
- Organic Carbon INC.
- Origami Capital Partners, LLC
- Origami Risk LLC
- Origin Investments
- Orion Advantage USA LLC
- Oroconda
- Osaka Express
- Oscar De La O Tailor Shop
- Oscar De La O Tailor Shop LLC
- Ossia Musical Forum
- Ot Technology, INC.
- Otero's Barber & Spa
- Ouidie's Flair
- Over N Over South Loop
- Overnorth
- P.f. Chang's To Go, LLC
- Pacific Air Travel
- Pacino's Classic Italian
- Packback INC.
- Paint The City
- Paisans Pizzeria And Bar Clark
- Palm Restaurant
- Palm Tree LLC
- Palmer Fresh Food LLC
- Palmer House Hilton
- Pamaca Financial INC.
- Panacea & Company
- Pancho's Cantina
- Panda Express #2522
- Pandora Media, LLC
- Panera Bread #6477
- Panhellenic Scholarship Foundation
- Pantheon
- Pantheon
- Papa Cto Consulting
- Paper Source
- Papparoti
- Paradigm Structural Engineers, INC.
- Paradigm Technology Consulting
- Paradise Unisex Spa
- Paragraphs, LLC
- Paramount Cleaners
- Paramount Events
- Parcel C LLC
- Paris Baguette
- Park Hero INC.
- Park One, INC.
- Park-mill Cleaners
- Parking Chi
- Parking Enforcement Of Illinois, INC.
- Parks And Bell Cleaning & Construction Company
- Parkshore Cleaners
- Parkside Realty, INC.
- Partners Animal Hospital South Loop
- Partners Credit And Verification Solutions LLC
- Party Favorites
- Pasele Senito LLC
- Passportology
- Passportvisaexpress.com
- Pat's Pizza
- Pat's Pizza
- Pathfinder Consulting
- Pathway To Living
- Patricia Miranda
- Patrick Engineering INC.
- Patty Burger
- Paul Chambers Salon
- Paul Klein Travel
- Paul Mcadams
- Paul Young Fine Jewelers
- Paula R Gosha
- Pauline Books & Media
- Payday Loan Corp Of Illinois
- Payday Loan Store Th E Loop
- Pazzo's
- Peach's
- Peak6 Capital Management LLC
- Peak6 Group LLC
- Pear Chef
- Pearson Professional Center
- Pedway Market
- Peet's Coffee & Tea
- Pekin Hardy Strauss INC.
- Pelini Eyecare
- Pendry Chicago, Hotel
- Peoples Auto Parking
- Perfect Bliss Care Agency LLC
- Perfect Day Cleaning & Restoration INC.
- Performance Clean, LLC
- Performers Music
- Performers Music
- Perilla Steak
- Perkins Coie LLP
- Permit Studio LLC
- Permitmaster
- Perrito Caliente Books
- Perritt Capital Managment
- Persona
- Peter Scheiner Jazz Piano
- Petterino's
- Petterino's / Do-rite Donuts
- Pga Tour Superstore
- Phase 1 Consulting
- Phenix Real Time Solutions INC