Pir

• PIR (gene)
• Pacific Imperial Railroad
• Parrot intermediate representation
• Partners in Research
• Passive infrared sensor
• Peak information rate
• Performance Index Rating
• Philadelphia International Records
• Philosophy in Review
• Phoenix International Raceway
• Pier 1 Imports
• Pierre Regional Airport
• Pir (Alevism)
• Pir (Sufism)
• Pir (Zoroastrianism)
• Pir Roshan
• Pir of the Britons
• Pir, East Azerbaijan
• Pir, Kerman
• Pir, Satu Mare
• Pirs (disambiguation)
• Pittsburgh Industrial Railroad
• Polyisocyanurate
• Portland International Raceway
• Pre-Islamic recent period
• Private information retrieval
• Prosopographia Imperii Romani
• Protein Information Resource
• Public Interest Registry
• United States Army