Pir

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

• Pir (Sufism), a Sufi teacher or spiritual leader
• Pir (Zoroastrianism), pilgrimage site in Persia, typically Zoroastrian

• Khan Jahan Lodi, known by the name of Pir Khan was an Afghan noble who rebelled against the Mughal Empire

• 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

• "Pir" (song), 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
• Pierre Regional Airport, South Dakota, United States (IATA code: PIR)
• PIR, NYSE symbol for Texas-based retailer Pier 1 Imports

• Pirs (disambiguation)

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