- P – How pack howitzer
- P3I – Pre-Planned Product Improvements
- PAR – pulse acquisition radar
- PAT – power-assisted traverse
- PC – Personal Computer
- PCB – printed circuit board
- PCC – Police Compact Carbine
- PCI – Pre-combat inspection
- PD – Point Defense
- PD – point detonating
- PD – Point of Departure
- PDNA – Positioning Determining/Navigation Unit
- PDRR – Program Definition and Risk Reduction
- PDW – Personal Defence Weapon
- PE – MoD Procurement Executive (UK)
- PE – Peace Enforcement (US DoD)
- PEC – Printed Electronic Circuits
- PFD – proximity fuze disconnector
- PFHE – prefragmented high explosive
- PFPX – prefragmented proximity fuzed
- PGMM – Precision Guided Mortar Munition
- PH – Probability of Hit
- Pi – Probability of incapacitation
- PIAT – Projector, Infantry, Anti Tank
- PIBD – Point Initiating Base Detonated
- PID – Positive Identification
- PIE – pyrotechnically initiated explosive
- PIP – Product Improvement Programme
- PL – Phase Line
- PLA – People's Liberation Army
- PLARS – Position Location And Reporting System (US)
- PLC – Programmable Logic Control
- PLO – Palestinian Liberation Army
- PLOS – Predicted Line Of Sight
- PLS – Palletised Load System (US)
- PM – porte mortier (mortar carrier)
- PM – Product Manager
- PMCS – Preventative Maintenance Checks and Services
- PMEE – U.S. Air Force abbreviation for Prime Mission Electronic Equipment
- PMO – Program Management Office (US)
- PMO – Provost Marshall's Office
- PMOD – Platform Modifications
- PMS – Pedestal-Mounted Stinger
- PNU – Position Navigation Unit
- POA&M – Plan Of Action & Milestones
- POF – Pakistan Ordnance Factory
- POS – Postes Optiques de Surveillance
- POW – Prisoner(s) of War
- PPI – plan position indicator
- PPS – Precise Positioning Service
- PRAC – practice
- PRAC-T – practice tracer
- PRI – projector reticle image
- PRP – Personnel Reliability Program (screening and monitoring of individuals with access to "special" weapons)
- PSD – Propulsion System Demonstrator
- PSO – Peace Support Operations
- PSS – Primary Sight System
- PTO – power take-off
- PVP – Petit Véhicule Protégé
- PW – Prisoner of War
- PWI-SR(GR) – Panser Wagen Infanterie-Standaard (Groep)
- PWP – Plasticised White Phosphorus
Read more about this topic: Glossary Of Military Abbreviations