Pir or PIR may refer to:

Places

* Pir, Kerman, a village in Kerman Province, Iran * Pir, Satu Mare, commune in Satu Mare County, Romania

Religion

Pir (Alevism) In Alevism, a Pir meaning Elder is one of the 12 ranks of Imam in Alevism. The rank of Dede or Ana are selected from among the Pirs. See also * Pir Pir or PIR may refer to: Places * Pir, Kerman, a village in Kerman Province, Iran * Pir, S ...

, one of the 12 ranks of Imam in Alevism *

Pir (Sufism) Peer or Pir ( fa, پیر, lit=elder) is a title for a Sufi spiritual guide. They are also referred to as a ''Hazrat'' (from ar, حضرة, Haḍra) and ''Sheikh (Sufism), Sheikh'' or Shaykh, which is literally the Arabic equivalent. The title i ...

, a Sufi teacher or spiritual leader *

Pir (Zoroastrianism) Pir ( fa, پیر) refers to a site of pilgrimage, typically one of the Zoroastrian faith, in Persian. Pirs range from localized devotional sites to major centers of worship.Aspandyar Sohrab Gotla (2000). "Guide to Zarthoshtrian historical places ...

, pilgrimage site in Persia, typically Zoroastrian

Science and technology

PIR (gene) Pirin is a protein that in humans is encoded by the ''PIR'' gene. This gene encodes a member of the cupin superfamily. The encoded protein is an Fe(II)-containing nuclear protein expressed in all tissues of the body and concentrated within dot-li ...

, for a human protein that is a possible transcriptional coregulator * Parrot intermediate representation, one of the two assembly languages for the Parrot virtual machine * Partners in Research, Canadian bio-medical research charity *

Passive infrared sensor A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms ...

, detects infrared emission * Peak information rate, a burstable rate set on routers and switches that allow throughput overhead *

Polyisocyanurate Polyisocyanurate (), also referred to as PIR, polyiso, or ISO, is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. The starting materials are similar to those used in polyurethane (PUR) except that the prop ...

, a plastic used for thermal insulation * Private information retrieval, a protocol for retrieving data without revealing what was retrieved * Protein Information Resource, database and bioinformatics resource * Public Interest Registry, manages .org Internet domain

Other

Pir Pir or PIR may refer to: Places * Pir, Kerman, a village in Kerman Province, Iran * Pir, Satu Mare, commune in Satu Mare County, Romania Religion * Pir (Alevism), one of the 12 ranks of Imam in Alevism * Pir (Sufism), a Sufi teacher or spiritu ...

, a song by Prakash Saput * Pacific Imperial Railroad, a defunct railway company in California * Performance Index Rating, a statistical formula in basketball * Philadelphia International Records, a record company based in Philadelphia, Pennsylvania * '' Philosophy in Review'', an academic journal *

Phoenix International Raceway Phoenix Raceway is a 1-mile, low-banked tri-oval race track located in Avondale, Arizona, near Phoenix. The motorsport track opened in 1964 and currently hosts two NASCAR race weekends annually including the final championship race since 2020. P ...

, Avondale, Arizona * Pir of the Britons, king of the Britons * Pir Roshan (born 1525), Pashtun warrior-poet and intellectual * Pittsburgh Industrial Railroad, reporting mark * Portland International Raceway, Portland, Oregon * Pre-Islamic recent period, an archaeological assemblage in the Persian Gulf * '' Prosopographia Imperii Romani'', a collection of Latin inscriptions on notable Romans * Parachute Infantry Regiment, airborne infantry unit of the United States Army * PIR, IATA code for Pierre Regional Airport, South Dakota * PIR, NYSE symbol for Texas-based retailer Pier 1 Imports * Post Incident Review, a review of the chronology, events and remediation for a system fault