Politics and Business magazines
- Pomare Ltd.
- Pomeroy Computer Resources, Inc.
- Ponderosa Steakhouse
- Poof-Slinky, Inc.
- Poore Brothers, Inc.
- Pop Warner Little Scholars, Inc.
- Pope & Talbot, Inc.
- Pope and Talbot, Inc.
- Pope Resources LP
- Popular, Inc.
- Port Imperial Ferry Corporation
- Portal Software, Inc.
- Portillo's Restaurant Group, Inc.
- Portland General Corporation
- Portland Trail Blazers
- Portmeirion Group plc
- Portugal Telecom SGPS S.A.
- POSCO
- Post Office Group
- Post Properties, Inc.