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 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