PP, pp or P_p may refer to:

Arts and entertainment

* ''Pianissimo'', a music term meaning ''very quiet'', from musical dynamics * 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) The People's Party ( es, Partido Popular ; known mostly by its acronym, PP ) is a conservative and Christian-democratic political party in Spain. The People's Party was a 1989 re-foundation of People's Alliance (AP), a party led by former mi ...

(''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) The Progressive Party ( is, Framsóknarflokkurinn, FSF) is an agrarian political party in Iceland. For most of its history, the Progressive Party has governed with the Independence Party. Since 30 November 2017, the party has been a coalition ...

* People's Partnership (Trinidad and Tobago) *

We Continue the Change We Continue the Change ( bg, Продължаваме промяната, Prodalzhavame promyanata; PP), sometimes translated as Change Continues, is a Centrism, centrist, anti-corruption List of political parties in Bulgaria, political party and ...

(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 Philipp is both a surname and a given name. Notable people with the name include: "Philipp" has also been a shortened version of Philippson, a German surname especially prevalent amongst German Jews and Dutch Jews. Surname * Adolf Philipp (1864� ...

, logo * PayPal, an online payments company

Religion

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

pope The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...

Science, technology, and mathematics

Biology and medicine

* Vitamin PP or nicotinamide *

Paliperidone palmitate Paliperidone palmitate (PP), sold under the brand name Invega Sustenna among others, is an atypical antipsychotic which is used in the treatment of schizophrenia and schizoaffective disorder. It is an antipsychotic ester – specifically the pal ...

, 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 The Walther PP (german: Polizeipistole, or police pistol) series pistols are blowback-operated semi-automatic pistols, developed by the German arms manufacturer Carl Walther GmbH Sportwaffen. It features an exposed hammer, a traditional double-ac ...

, a pistol * Length between perpendiculars ("pp" or "p/p"), the length of a ship * Peak to peak (p–p)

amplitude The amplitude of a periodic variable is a measure of its change in a single period (such as time or spatial period). The amplitude of a non-periodic signal is its magnitude compared with a reference value. There are various definitions of amplit ...

of a signal *

Polypropylene Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene. Polypropylene belongs to the group of polyolefins and ...

, 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