PP

PP, pp, Pp, or P_p may refer to:

Business

• Planned Parenthood
• Project Plan
• Privateer Press

Places

• Perry Park, several places go by this name
• Phi Phi Islands, an island grouping located in Thailand between the large island of Phuket and the western Andaman Sea coast of the mainland
• Potts Point, a suburb of Sydney, Australia

Computer science

• Piecewise polynomial, see Spline (mathematics)
• Probabilistic polynomial time complexity class

Electronic media

• Microsoft PowerPoint
• PayPal website
• Pentium Pro, 6th generation Intel central processing unit
• Psychic Points from EarthBound
• Pokémon Platinum, Pokémon video game
• Power Points in the Pokémon video games
• PP-format, a Met Office proprietary file format for distributing climate data
• Pure Pwnage, an internet-based show
• Puyo Puyo, Japanese puzzle video game
• Puzzle Pirates, an MMO maintained by Three Rings Design

Law

• Per procurationem ("by agency"), signing a letter on somebody else's behalf ("p.p.")
• Public prosecutor
• Personal property

Linguistics

• Participial phrase
• Postpositional phrase
• Prepositional phrase

Media

• Pittsburgh Press, a former newspaper of the Pittsburgh, Pennsylvania region.

Nautical terms

• Length between perpendiculars ("pp" or "p/p")

Music

• Pianissimo ("pp")
• Pencey Prep, an American band
• Person Pitch, a Panda Bear album
• Phantom Planet
• Phi-Phi, an opérette légère in three acts with music by Henri Christiné and a French libretto by Albert Willemetz and Fabien Solar
• "Paper Plane" (song), a song by Status Quo on the Piledriver album
• "Paper Planes", a song by M.I.A. on the Kala album

Politics

• Progress Party
• Patriotic Party (Guatemala) (Partido Patriota)
• People's Party (Romania) (Partidul Popular)
• People's Party (Spain) (Partido Popular)
• Pirate Party (Sweden) (Sweden) (Piratpartiet)
• Parti Pirate (France)
• Progressive Party of Brazil (Partido Progressista)
• Centro Democrático e Social/Partido Popular, (Portugal)

Religion

• Papa (Latin for "Pope"), when written "PP."
• Parish priest, when written "P.P."
• Prajnaparamita ("Perfection of Wisdom"), and/or a genre of Buddhist sutras describing it
• Pater Putatibus ("Foster Father/Assumed Father"), one of the Latin titles of Saint Joseph as foster father of Jesus

Science, medicine & engineering

• Percentage point
• P_p, a process performance index
• Pancreatic polypeptide
• PP cell, cell producing Pancreatic polypeptide
• Per protocol population in clinical trials
• Peroxisome Proliferator
• Polyphenols, a category of phytochemicals
• Polypropylene, a very common plastic polymer
• Polyphagia
• Primary production
• Proton-proton chain reaction
• Pseudopotential, a computational chemistry approximation

Sport

• Paparazzi Productions, a former professional wrestling stable
• Persepolis F.C., Iranian football (soccer) team
• A power play, chiefly in ice hockey
• Prenton Park, the home of English association football club Tranmere Rovers
• Paul Pierce, Boston Celtics player
• Pittsburgh Pirates, a Pittsburgh-based Major League Baseball team

Other

• Pages, from Latin paginae, see Acronyms
• Paper Plane
• Polly Pocket
• Pater Patriae ("p.p."), an honorary title in the Ancient Roman Empire and often part of the emperor's title
• Prank Patrol, a children's TV series
• Pied Piper, fairy tale
• Post processing, photography
• Walther PP, a semi-automatic pistol
• PeePee - Urine
• PeePee - Penis