PCP
- 3-HO-PCP
- 3-MeO-PCP
- 4-MeO-PCP
- Air gun
- Bakuman
- Faster/P.C.P.
- Lysosomal Pro-X carboxypeptidase
- OS/360 and successors
- PCP Torpedo
- PCP theorem
- PGP (disambiguation)
- Palestine Communist Party
- Para-Chlorophenylpiperazine
- Paraguayan Communist Party
- Parallel coordinates
- Partido Comunista del Peru
- Partido Comunista del Perú - Patria Roja
- Pentachlorophenol
- Performance Co-Pilot
- Peridinin-chlorophyll-protein complex
- Person-centred planning
- Personal Choice Party
- Personal care product
- Personal contract purchase
- Peruvian Communist Party
- Pharmacy Council of Pakistan
- Phencyclidine
- Planar cell polarity
- Pneumocystis pneumonia
- Port Control Protocol
- Portuguese Communist Party
- Post correspondence problem
- Post-coital pill
- Primary care physician
- Principia Cybernetica
- Priority Code Point
- Priority ceiling protocol
- Probabilistically checkable proof
- Progressive Conservative Party of Canada
- Proletarian Catalan Party
- Proto-Central Pacific language
- Puerto Rican Communist Party
- Purple City Productions
- Put–call parity
- Shining Path