WPI

WPI, a three letter acronym, may stand for:

• Worcester Polytechnic Institute, a university in Massachusetts, USA, specialising in engineering
• Whey Protein Isolate
• The Whittemore Peterson Institute, performs research into chronic fatigue syndrome
• The Wholesale price index, a measure of inflation
• Wilayah Pembangunan Iskandar
• Windows Post-Install Wizard
• Winning Percentage Index, a measure of a team's strength. Used in some locations to seed bracketed tournaments
• The Worker-Communist Party of Iran
• The World Policy Institute is a research and education policy center in New York City
• Wraps Per Inch, a method of measuring the weight of yarn