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 spiritual leader Pir (Zoroastrianism), pilgrimage site in Persia, typically Zoroastrian Science and technology PIR (gene), 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, detects infrared emission Peak information rate, a burstable rate set on routers and switches that allow throughput overhead Polyisocyanurate, 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, 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, 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 See also Pirs (disambiguation)