FPI may refer to:
Government and politics Federal Prison Industries, a US government corporation which employs prison labor Foreign Policy Initiative, an American think tank Foreign Policy Institute (Turkey), a Turkish think tank The Foreign Policy Institute, a research institute at Johns Hopkins University Islam Defenders Front (Indonesian: ), an Indonesian political organization Ivorian Popular Front (French: ) The Service for Foreign Policy Instruments, a service of the European Commission
Science, engineering and mathematics Fabry–Pérot interferometer Fast probability integration, a method used in reliability engineering Fixed-point iteration Fluorescent penetrant inspection Formal Public Identifier Freiburger Persönlichkeitsinventar, a psychological personality test
Other uses Family and Parenting Institute Faridpur Polytechnic Institute Football Power Index Force Protection Inc, an American military vehicle manufacturer Foreign portfolio investment Free Press of India Frunze Polytechnic Institute, now Kyrgyz Technical University