Politics and Business magazines
- Parker Hannifin Corporation
- Parker-Hannifin Corporation
- Parlex Corporation
- Parmalat Finanziaria SpA
- Parque Arauco S.A.
- Parsons Brinckerhoff, Inc.
- PartnerRe Ltd
- Party City Corporation
- Pathé SA
- Pathmark Stores, Inc.
- Patina Oil & Gas Corporation
- Patrick Industries, Inc.
- Patterson Dental Co.
- Patterson-UTI Energy, Inc.
- Patton Boggs LLP
- Paul Harris Stores, Inc.
- Paul Mueller Company
- Paul Reed Smith Guitar Company
- Paul, Hastings, Janofsky & Walker LLP
- Paul, Weiss, Rifkind, Wharton & Garrison