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- Photogenic, INC.
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- Planet Fitness
- Planned Parenthood Illinois Action
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- Planning/aging
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- Plants In The Hood LLC
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- Pm Jewelers
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- Podesta & Co.
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- Pooch Club
- Popeyes Chicken
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- Porkymon
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- Prairie Capital
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- Pregis
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- Premier International Enterprises
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- Premier Mechanical Solutions, LLC
- Premier Travel Management
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- Premium Cruises
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- Preservation Of Affordable Housing, INC.
- Pressbox
- Prestige Nails & Spa
- Prestige Remodeling Group LLC
- Prestiz International
- Pret A Manger
- Pretty Hare
- Prevent Blindness
- Prevent Child Abuse America
- Prh Industries, LLC
- Primark
- Prime & Provisions
- Primera Engineers LTD
- Primo Cleaners
- Princess Nails & Spa
- Principal Global Investors
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- Printers Row Wine Shop
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- Pritzker Alternative Strtegies LP
- Pritzker Military Museum & Library
- Private Vista LLC
- Prizzypbella
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- Pro Handy Works LLC
- Professional Gem Sciences Laboratory, LTD.
- Professional Visa & Passport Services LLC
- Project Achilles LLC
- Project Control
- Promanage, LLC
- Prometric LLC
- Prometric LLC
- Proquire LLC
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- Protein Bar
- Protein Bar
- Protein Bar
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- Prudential Gem And Jewelry
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- Public Consulting Group INC
- Public Interest Law Initiative
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- Pups Pet Club
- Pure Green South Loop
- Pure Rain Nail And Spa
- Purple Group
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- Pwc Us Consulting LLP
- Pwc Us Group LLP
- Pwc Us Tax LLP
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- Pyramid Partnership
- Pyramid Workwise Alliance
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- Quantum Crossings, L.L.C.
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- Quest At British International School Of Chicago
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- Quigg Engineering INC.
- Quiznos Classic Sub
- Qwest Communications Company, LLC
- R & R Stores
- R & S Architectural LLC
- R Creations INC.
- R M Engraving INC.
- R Squared Enterprises
- R-t Specialty
- R. R. Donnelley & Sons Company
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- R.r.k.p INC.
- R.s. Diamonds INC.
- R&m Consulting
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- Rainbow Cone
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- Rbc Capital Markets, LLC
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