RPI

RPI may refer to:

Universities

 * Rensselaer Polytechnic Institute, Troy, New York, US
 * Richmond Professional Institute, merged into Virginia Commonwealth University

Science and technology

 * Raspberry Pi (RPi), a UK single-board computer
 * Reticulocyte production index, a blood test result
 * Ribose-5-phosphate isomerase (Rpi), an enzyme

Organizations

 * Recognition Professionals International
 * Republican Party of India
 * Republican Party of Iowa

Other

 * Rating percentage index, in college sports
 * Retail price index, UK inflation measure
 * Revenue Protection Inspector, on UK public transport
 * Rock progressivo italiano, Italian progressive rock