| Abbreviation | Definition |
|---|---|
| OS | Other Source |
| OS | Outside Scope |
| P | Pending |
| P&C | Personal and Confidential |
| P&P | Pamphlets and Publications |
| P* | Pending Inactive |
| PA | Privacy Act of 1974 |
| PA | Profile Analysis |
| PCI | Potential Criminal Informant |
| PCIT | Priority Case Investigation Team |
| PCT | Precinct |
| PD | Portland Field Office |
| PDB | Presidential Daily Briefing |
| PE | Paternity Exclusion |
| PEAD | Presidential Emergency Action Document |
| PF | Personal File |
| PG | Pittsburgh Field Office |
| PH | Philadelphia Field Office |
| Ph | Phonetic spelling of word or name |
| PHS | Personal History Statement |