IPR is a three-letter abbreviation with multiple meanings, including:
In media:
- Indiana Public Radio
- Independent Public Radio, a radio network in Minnesota
- Interlochen Public Radio
- Iowa Public Radio, a public radio network serving as NPR affiliates in the state of Iowa
- Indie Press Revolution
- Independent Project Records, a United States post-punk record label primarily active in the 1980s and 1990s.
- Institute of Production and Recording
In science, technology and mathematics:
- InterPro Reference
- Institute for Physical Research, a physics research institute located in Armenia
- Institute for Plasma Research, a nuclear fusion research institute of India.
- iPr, an abbreviation for the isopropyl group in organic chemistry.
- Interproximal Reduction, an orthodontic treatment
- Interpercentile Range
- Inverse participation ratio in physics (quantum mechanics)
- inch per revolution - feed rate in turning
- Indirect Potable Reuse - a method for using Reclaimed Water
In government, business and society:
- Intellectual Property Rights
- Institute of Pacific Relations
- Indicação de Proveniência Regulamentada (Indication of Regulated Origin), a label assigned by the Portuguese government to higher-quality wine produced in specific regions of the country. The term equates to the French
- Interdisciplinary peer review
- Integrated Practice Resources, LLC, an onsite diagnostic testing company
- Inward Processing Relief Customs Regime with economic impact
- Investor and Public Relations
- Instant Product Replacement
- Inflow Performance Relation
- Interaction Problem Report
- Interim Progress Review, an acquisition term
- In Plant Retirement
- Installation Process/Progress Review
- International Planning and Research, a market research consultancy