PCP

Partido Comunista del Peru, a.k.a. Shining Path
Pentachlorophenol, Timber Preservative
Partido Comunista Paraguayo, Paraguayan Communist Party
Partido Comunista Peruano, Peruvian Communist Party
Partido Comunista Português, Portuguese Communist Party
Partit Català Proletari, Proletarian Catalan Party
Phencyclidine, a drug also known as Angel Dust
Planet Core Productions, now defunct record label from Frankfurt ran by Marc Trauner and Thorsten Lambart
Pneumocystis jiroveci pneumonia, also known as pneumocystis pneumonia (formerly known as Pneumocystis carinii pneumonia)
Post-coital pill, a form of Emergency contraception
Post correspondence problem, an important problem in computability theory
Primary care physician, a doctor who acts as first point of consultation for patients
Primary care paramedic
Priority ceiling protocol, a computer science concept
Probabilistically checkable proof, a notion in the theory of computational complexity theory
PCP Theorem, an important proof in computational complexity theory.
Wikipedia:Pokémon Collaborative Project - A WikiProject to improve Pokémon-related articles.
A song by Manic Street Preachers, from their 1994 album The Holy Bible.
Purple City Productions, Harlem based rap group