# PR

PR, P.R., Pr, pr, or Pr. may refer to:

## Arts, entertainment, and media

* P.R. (TV series), a Canadian television sitcom
* Partisan Review, a former political and literary journal
* Perry Rhodan, German science fiction series
* Power Rangers, an American television franchise based on Super Sentai
* Polskie Radio, Poland's national radio broadcasting organization

## Places

* PR postcode area, UK, including Preston and Lancashire
* Paraná (state), Brazil (ISO 3166-2:BR)
* Parma, Italy (ISO 3166-2:IT)
* Puerto Rico, ISO 3166 code PR

## Politics

* Pakatan Rakyat, an informal Malaysian political coalition
* Party of Labour (Partija rada), a political party in Serbia
* Proportional representation, a property of some voting systems
* Radical Party of Chile (Partido Radical), 1863–1994
* Radical Party of Chile (2018) (Partido Radical de Chile)
* Republican Party of Albania, a political party in Albania

## Public relations

* Public relations, the professional maintenance of a favorable public image by an organisation or person
* Press release, a prepared statement given to the news media as a public-relations tool

## Religion

* Pastor, an ordained leader of a Christian congregation
* Permanent rector, or permanens rector, of a parish

## Science, technology, and mathematics
### Biology and medicine

* Partial Response, a component of Response Evaluation Criteria in Solid Tumors
* Pathogenesis-related proteins, produced by plants under pathogen attack
* Penicillium roqueforti
* Per rectum, meaning "administered rectally"
* Pigment red (e.g. Pigment Red 179, Pigment Red 190) or para red
* PR interval, a measurement used in cardiology
* PR-104
* Progesterone receptor, a protein

### Computing

* PR (complexity), a complexity class
* pr, Unix command to paginate or columnate files for printing
* Adobe Premiere Pro, software which uses "Pr" as its icon abbreviation
* Pagerank, a Google technology
* Performance Rating, a computing term by AMD
* Project Reality, series of video games
* Pull request, part of distributed version control
* Part of the YPbPr standard

### Mathematics

* PR (complexity), a complexity class
* Pr(E), also P(E), the probability of an event E
* pr$_i$, a notation for the scalar projection onto the i-th component
* Positive-real function, in mathematics
* Proportional representation, a property of some voting systems

### Other uses in science and technology

* Praseodymium, symbol Pr, a chemical element
* Prandtl number, in physics and engineering, typically denoted Pr
* Propyl radicals or groups, denoted Pr in organic chemistry

## Sports

* Personal record, an individual's best result in a particular event
* Pinch runner, in baseball
* Protected ranking, a method of ranking tennis players coming back from injury
* Punt returner, a position in American football

## Transportation

* Pakistan Railways (reporting mark PR)
* Polregio (formerly Przewozy Regionalne), a polish railway operator
* Park and ride, a type of car park with public transport connections
* Philippine Airlines (IATA airline designation PR)
* Poste restante, mail held for collection

## Other uses

* Pakistan Rangers, a paramilitary force of Pakistan
* Parachute rigger, a former U.S. Navy rank
* Permanent residency
* Princess Royal (disambiguation)
* Professor
* A US Navy hull classification symbol: Patrol river gunboat (PR)
* PR, in linguistics, glossing abbreviation for present tense