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