- National Council Of State Boards Of Nursing
- National Economic Research Associates, INC.
- National Fiber Supply LLC
- National Investment Services
- National Louis University
- National Marine Manufacturers Association, INC.
- National Restaurant Association
- Nationwide Investment Svc
- Native Foods Cafe
- Naturalizer
- Naturopathic Nirvana Consulting LLC
- Nautilus Solar Energy
- Navigate Research
- Navikan INC
- Navkar Food INC.
- Nb Global Imports INC.
- Nba All Star Event
- Nbpa
- Ndi Aro Holdings
- Nealshow Productions LLC
- Necessary & Sufficient Coffee - Printer's Row
- Necessity Health Scrubs LLC
- Negen Technologies LLC
- Nelson Mullins Riley & Scarborough LLP
- Neon Avenue INC.
- Nerissa B. Modern Calligraphy LLC
- Nesh Mediterranean Grill
- Nesh Mediterranean Group INC.
- Netapp, INC
- Netikus.net LTD
- Netrality Properties
- Neuberger Berman Investment Advisers LLC
- Neuberger Berman LLC
- Neutral Tandem-illinois, LLC
- New Age Technology Construction Company
- New England Research & Management, INC.
- New Frontier Developments, Co.
- New Orleans Kitchen
- New Vista Investment Group, LLC
- New Ways Learning
- New York Jewelers
- News America Marketing In-store Services
- News And Views
- News Nation
- Nexamp, INC.
- Next Gen Foods, INC.
- Nextcapital Group LLC
- Nextcapital Group, INC.
- Nextgen Global Resources
- Nexum, INC.
- Nice And Distressed
- Nicholas Dinardi
- Nicos Vision
- Nielsen Business Worldwide
- Nielsen Consumer LLC
- Nikda LLC
- Nirvana Technology Solutions
- Nitta
- Niu B
- No Limit Media Consulting, LLC
- Nobitlost LLC
- 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
- Notre Dame Club Of Chicago
- Novantas, INC.
- Noyes Steinman Companies, LLC
- Nutella Ferrero & Nutella Cafe
- Nuveen Securities, LLC
- Nvisia LLC
- Nxt Capital, LLC
- O.k. Cleaners
- O'brien's Riverwalk Cafe
- O'neil's On Wells St. Patrick's Festival
- 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
- Okay Cannabis Dispensary
- Okta, INC
- Old Navy # 3058
- Old School Vending
- 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 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
- Oracle America, INC.
- Orangetheory Fitness
- Orangetheory Fitness
- Orbit Solutions INC
- Orchard First Source Capital
- Organic Carbon INC.
- Origami Capital Partners, LLC
- Origami Risk LLC
- Origin Investments
- Oroconda
- Osaka Express
- Oscar De La O Tailor Shop
- Oscar De La O Tailor Shop LLC
- Ossia Musical Forum
- Otero's Barber & Spa
- 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 #2012
- Pandora Media, LLC
- 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 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