Politics and Business magazines
- PSI Resources
- Psion PLC
- Psychemedics Corporation
- Psychiatric Solutions, Inc.
- PT Astra International Tbk
- PT Bank Buana Indonesia Tbk
- PTT Public Company Ltd.
- Pubco Corporation
- Public Service Company of Colorado
- Public Service Company of New Hampshire
- Public Service Company of New Mexico
- Public Service of New Hampshire
- Public Storage, Inc.
- Publicis Groupe
- Publicis S.A.
- Publishers Group, Inc.
- Publishing & Printing
- Publishing and Broadcasting Limited
- Pueblo Xtra International, Inc.
- Puerto Rico Electric Power Authority