| Abbreviation | Definition |
|---|---|
| PHL | Police Help Line |
| PHPD | Port Hueneme Police Department |
| PHQ | Police Headquarters |
| PI | Performance Indicator |
| PI | Police Informant |
| PI | Police Inspector |
| PIC | Police Information Check |
| PICH | Policía de Investigaciones de CHile |
| PICS | Post Incident Colleague Supporter |
| PID | Project Initiation Document |
| PIHB | Police Infraction Hearing Board |
| PII | Public Interest Immunity |
| PIMS | Police Informant Management System |
| PINS | Police Information Net for Scotland |
| PIO | Public Information Office |
| PIPD | Presque Isle Police Department |
| PIPS | Police Integrated Patrol System |
| PIR | Police Initial Recruitment |
| PIR | Police Initial Recruitment test |
| PIR | Police Initial Recruitment test |