IRP

IRP may mean any of the following in:

Science and technology

• NIH Intramural Research Program
• I/O request packet, in Microsoft Windows
• Iron Removal Plant, in water treatment
• Iron-responsive element-binding protein or iron regulatory protein

Political and international organizations

• Initiative of the Republic of Poland, a former Polish political party
• International Recovery Platform, a joint initiative of United Nations agencies, international financial institutions, national and local governments, and non-governmental organizations engaged in disaster recovery
• Institute of Revolutionary Practice, educational institution affiliated with the Kuomintang
• International Registration Plan of transportation carriers in North America
• The International Reporting Project, funds independent journalistic coverage
• International Resource Panel, for sustainable use of natural resources
• International Responsa Project, a Schlesinger Institute project concerning medical issues and Jewish law
• Islamic Renaissance Party of Tajikistan
• Islamic Republic of Pakistan
• Islamic Republic Party, former Iranian political party

Other

• IRP, IATA code for Matari Airport
• Irp., Irpinian dialect
• Indianapolis Raceway Park, a short track in Indianapolis, Indiana
• Individual'nyi Ratsion Pitaniya (IRP) (Индивидуальный рацион питания (ИРП)), Russian military rations
• Integrated resource planning, a method for long-term utility planning
• Integrated Rail Plan for the North and Midlands, UK government plan for its railways
• Integrated Resource Plan, used in South Africa and by United States energy utilities