IRP may mean any of the following in: Science and technology Integration Reference Point in telecommunications 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 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