| P&G | Proctor and Gamble 
| Others |
| P&I | Pensions & Investments
| Others |
| P&I | Performance and Interface (Specification)
| Others |
| P&I | Principal and Interest
| Others |
| P&I | Protection and Indemnity Insurance
| Others |
| P&ID | Piping & Instrumentation Diagram
| Others |
| P&ID | Piping and Instrumentation Diagram
| Others |
| P&IDS | Piping and Instrumentation Diagrams
| Others |
| P&J | Press and Journal
| Others |
| P&J | Punch and Judy
| Others |
| P&L | Panhard et Levassor
| Others |
| P&L | Profit & Loss
| Others |
| P&L | Profit and Loss
| Others |
| P&L | Profit and Loss statement
| Others |
| P&M | Planetary Mission
| Others |
| P&M | Pratt and Miller
| Others |
| P&M | Processes and Materials
| Others |
| P&M | Program Milestone
| Others |
| P&M | Pulse Modulation
| Others |
| P&MT | Production and Manufacturing Technology
| Others |
| P&N | Pierre and Natasha
| Others |
| P&N | Psychiatry and Neurology
| Others |
| P&O | Peninsular and Oriental Steam Navigation Company
| Others |
| P&O | Positioning & Orientation
| Others |
| P&OE | Permissions and Obligations Expression
| Others |
| P&P | Pamphlets and Publications
| Others |
| P&P | Pendl & Piswanger
| Others |
| P&P | Pichon et Parat
| Others |
| P&P | Plug and Play
| Others |
| P&P | Policies and Procedures
| Others |
| P&P | Policy and Procedure
| Others |
| P&P | Policy and Procedures
| Others |
| P&P | Postage & Packaging
| Others |
| P&P | Probation and Parole
| Others |
| P&PC | Production and Process Control
| Others |
| P&Q | Performance and Quality
| Others |
| P&R | Park and Ride
| Others |
| P&R | Performance and Resources
| Others |
| P&R | Personnel and Readiness
| Others |
| P&R | Planning and Research
| Others |
| P&R | Planning and Resources
| Others |
| P&S | Columbia University, College of Physicians and Surgeons
| Others |
| P&S | Pack and Ship
| Others |
| P&S | Pan and Scan
| Others |
| P&S | Parts and Service
| Others |
| P&S | Perlet & Shiner, P.A., defense attorneys
| Others |
| P&S | Permanent and Stationary
| Others |
| P&S | Physicians and Surgeone
| Others |
| P&S | PIECES & STEMS
| Others |
| P&S | Publish and Subscribe
| Others |