PCP

PCP could mean:

In politics:
Partido Comunista del Peru, also known as Shining Path
Partido Comunista Paraguayo, Paraguayan Communist Party 
Partido Comunista Peruano, Peruvian Communist Party
Partido Comunista Português, Portuguese Communist Party
Partido Comunista Puertorriqueño, Puerto Rican Communist Party
Partit Català Proletari, Proletarian Catalan Party
In science:
Phencyclidine, a recreational drug known by a number of street names including angel dust, supergrass, killer weed, sherm, embalming fluid, and rocket fuel.
PCP theorem, an important proof in computational complexity theory
Probabilistically checkable proof, a notion in the theory of computational complexity
Pentachlorophenol, timber preservative
Pneumocystis pneumonia, (formerly known as Pneumocystis carinii pneumonia)
Post correspondence problem, an important problem in computability theory
Priority ceiling protocol, a computer science concept
Other:
Post-coital pill, a form of emergency contraception
Primary care paramedic
Primary care physician, a doctor who acts as first point of consultation for patients
A song by Manic Street Preachers, from their 1994 album The Holy Bible
Purple City Productions, a Harlem-based rap group
Put-call parity
 Pre-charged Pneumatic, an air-gun technology
 Pharmaceuticals & Consumer Products
 Plumbing Code of Practice
 WikiProject Pokémon, formally known as the Pokémon Collaborative Project