1. Science and technology

2. Organizations

3. Other

4. See also

RPI may refer to:

Science and technology

• Raspberry Pi, a single-board computer developed in the UK by the Raspberry Pi Foundation
• Reticulocyte production index (corrected reticulocyte count), a blood test result
• Remote procedure invocation, a name sometimes used for remote procedure call.

Organizations

• Recognition Professionals International
• Rensselaer Polytechnic Institute, a university in Troy, New York
• Republican Party of India
• Republican Party of Iowa
• Richmond Professional Institute, former college before being merged with MCV into Virginia Commonwealth University
• Ron Paul Institute
• Rose Polytechnic Institute, former name for Rose-Hulman Institute of Technology in Terre Haute, Indiana
• Ryerson Polytechnic Institute, former name of Ryerson University in Toronto, Ontario
• Russian Petroleum Investor, an influential technical journal on Russian oil and gas

Other

• Rating Percentage Index, college sports system to rank teams
• Retail price index, measure of inflation in the United Kingdom
• Revenue Protection Inspector, United Kingdom public transit patrol
• Rock progressivo italiano, music genre

See also

• Roleplay Intensive MUD (RPIMUD), a category of MUD
• RP 1 (disambiguation)
• RPL (disambiguation)

• 4RGT
• 4Rhythm
• 4RN Brisbane
• 4RO
• 4 route du Champ d'Entraînement
• 4% Rule
• (4S,5R)-4,5-dihydroxy-3-oxocyclohexene-1-carboxylic acid
• (-)-(4S)-beta-phellandrene synthase
• (4S)-beta-phellandrene synthase (geranyl-diphosphate-cyclizing)
• 4SC
• 4 Schlussel
• 4 Schlüssel
• 4 Scorpii
• 4-sec-Butylcyclohexanol
• 4-''sec''-Butylcyclohexanol
• 4SEE
• 4 Segundos (song)
• 4 sekunder
• 4seven
• 4Seven
• 4Shore
• 4-sided die
• 4-simplex honeycomb
• 4 sister
• 4 sisters