- Portland Oregon Visitors Association - VA
- Portola Plaza Hotel
- Portsmith, VA CVB
- Portsmouth Convention and Visitors Bureau
- Portsmouth Hospital
- Porzio, Broomberg and Newman
- Possis Medical, Inc.
- Post Acute Medical Tulsa
- Potomac Digiteck
- Pottstown Memorial Medical Center
- Powell Valley Healthcare
- Power Partners
- Powers and Sons Construction Company Inc.
- PPD
- PPD Medical Device
- PPG Industries Inc.
- PPL
- PRA International
- PRA International
- Prairie Ridge Hospital and Health Services
- Prairie View AandM University
- Prairieland United Way
- Pratt and Whitnex
- Prattville Baptist Hospital
- Praxair, Inc.
- Praxair, Inc.
- Pre A Ayreda A pusoreas con Imped
- Precept Life Sciences
- Precision Dental Laboratory, Inc.
- Precision Machined Products Association
- Precision Marketing Partners, LLC - and The Academy of Financial Services Studies
- Precision Meetings Events
- Precision Printing
- PREIT - Pennsylvania Real Estate Investment Trust
- Prelist America
- Premier Circuit Assembly Inc.
- Premier Distributing Co.
- Premier Research
- Premier Technologies Inc.
- Premier Therapy Services
- Premiere Conferencing
- Preprint Publishing Compant, Inc.
- PresbyHomes and Services
- Presbyterian Health Center
- Presbyterian Home at Meadow Lakes
- Presbyterian Home of Maryland Inc.
- Presbyterian Homes and Services Inc. of New Jersey
- Presbyterian Homes in the Presbytery of Huntingdon
- Presbyterian Homes of Georgia - Atlanta
- Presbyterian Homes of Georgia Inc. - Quitman