- Penton Media, Inc.
- People To People International
- People, Inc.
- Peoples Community Health Care
- Peoples Income Tax, Inc.
- PeopleSoft
- Peoria Area CVB
- Pepperidge Farm, Inc
- Peppermill
- Pepsi Americas
- Pepsi Bottling Company
- Pepsi Cola Bottling Co.
- Pepsi Cola Bottling Group
- Pepsi-Cola National Brand Beverages
- PepsiCo
- PERC
- Perfect Settings
- Perfection Oil Co.
- Performance Events
- Performance Trailers
- Peripheral SVCS Inc
- Perishable Distributors of Iowa
- Perishing County Board of Commissioners
- Perkins County
- Perkins Eastman Architects PC of New York
- Perkins Eastman Architects PC of Pennsylvania
- Perkins Electronics
- Perkins Restaurant
- Perma
- Perot Systems Corporation
- Perotsystems
- Perry County Commissioner Office
- Perry County Memorial Hospital
- Perry High School White Coat Club
- Perry Hospital
- Perry Memorial Hospital
- Perry Travel
- Pershing General Hospital
- Person County United Way
- Pet Paws
- Peterson Healthcare and Rehabilitation Hospital
- Peterson Hospital
- Peterson Regional Medical Center
- Petris Technology Inc.
- Petro Amigos Supply Inc.
- PetSmart
- Pfaffmann + Associates PC
- Pfizer Global Research and Development
- PGA 1st Tee Chapter
- PGandE Corp.