PP, pp or P_p may refer to:

Arts and entertainment

* ''Pianissimo'', a music term meaning ''very quiet'', from

musical dynamics In music, the dynamics of a piece is the variation in loudness between notes or phrases. Dynamics are indicated by specific musical notation, often in some detail. However, dynamics markings still require interpretation by the performer depen ...

* Production code for the 1967–1968 ''Doctor Who'' serial '' The Enemy of the World'' *

Police Procedural The police show, or police crime drama, is a subgenre of procedural drama and detective fiction that emphasizes the investigative procedure of a police officer or department as the protagonist(s), as contrasted with other genres that focus on eith ...

- a subgenre of procedural drama and detective fiction

Businesses and organisations

Political parties

* Patriotic Party (Guatemala) * People's Party (Spain) (''Partido Popular'') *

Pirate Party Pirate Party is a label adopted by Political party, political parties around the world. Pirate parties support Civil and political rights, civil rights, direct democracy (including e-democracy) or alternatively Participatory democracy, partici ...

(Global) * Progressistas (Brazil) (''Progressistas'') * Progressive Party (Iceland) * People's Partnership (Trinidad and Tobago) * We Continue the Change (Bulgaria) ("Prodalzhavame promyanata")

Other businesses and organizations

Pancasila Youth The Pancasila Youth ( id, Pemuda Pancasila, ''PP'') is an Indonesian far-right paramilitary organization established in 1959. The organisation's name refers to ''Pancasila'', the official "five principles" of the Indonesian state. Pemuda Pancas ...

(''Pemuda Pancasila''), an Indonesian paramilitary organization *

PediaPress PediaPress GmbH is a software development and print-on-demand company located in Mainz, Germany. The company is a spin-off of Brainbot Technologies AG. It allows users to create customized books from wiki content using an automated PDF file bui ...

, a German software company *

Planned Parenthood The Planned Parenthood Federation of America, Inc. (PPFA), or simply Planned Parenthood, is a nonprofit organization that provides reproductive health care in the United States and globally. It is a tax-exempt corporation under Internal Reve ...

, a reproductive health organization * Philipp Plein, logo * PayPal, an online payments company

Religion

* pp, ''Papa Pontifex'', post-nominal used by popes

Science, technology, and mathematics

Biology and medicine

* Vitamin PP or nicotinamide * Paliperidone palmitate, an antipsychotic medication * Pancreatic polypeptide, a polypeptide secreted by PP cells ** PP cell or pancreatic polypeptide cell * pro parte, abbreviated p.p., for a type of synonymy in taxonomy

Computing

* PP (complexity), a probabilistic polynomial time complexity class * PP-format (Post Processing Format), a file format for meteorological data * PP X.400, an e-mail protocol * Plug and play (P&P), a property of a peripheral device *

Microsoft PowerPoint Microsoft PowerPoint is a presentation program, created by Robert Gaskins and Dennis Austin at a software company named Forethought, Inc. It was released on April 20, 1987, initially for Macintosh computers only. Microsoft acquired PowerPoi ...

, a presentation program

Mathematics

* P–P plot, a probability plot, in statistics *

Percentage point A percentage point or percent point is the unit (measurement), unit for the Difference (mathematics), arithmetic difference between two percentages. For example, moving up from 40 percent to 44 percent is an increase of 4 percentage points, but a ...

, in business writing and statistics * Process performance index (P_p) * ''Presque partout'' ( almost everywhere), in measure theory and analysis. (This is always lower case -- 'pp'. In English 'ae' is often used instead.)

Other uses in science and technology

* Paris Principles (cataloging), a theoretical foundation for the creation of bibliographical cataloging rules for libraries * Walther PP, a pistol * Length between perpendiculars ("pp" or "p/p"), the length of a ship * Peak to peak (p–p) amplitude of a signal * Polypropylene, a common plastic polymer * Proton–proton chain reaction, in nuclear physics

Other uses

* p.p., ''

Per procurationem Procuration () is the action of taking care of, hence management, stewardship, agency. The word is applied to the authority or power delegated to a procurator, or agent, as well as to the exercise of such authority expressed frequently by procurati ...

'', when signing on behalf of another * pp, pages (of a book), an example of the convention of doubling the letters in the acronym to indicate plural words, see Acronym and initialism#Representing plurals and possessives *

Percy Pig Percy Pig is a British brand of pig-shaped gummy raspberry, strawberry, cherry and grape-flavoured confectionery products made under licence in Germany by Katjes International, Katjes for Marks & Spencer which first appeared in stores in 1992. ...

, a British brand of pig-shaped fruit-flavoured confectionery products