FDI may refer to:
Finance fDi magazine, a British foreign direct investment publication Federal Deposit Insurance Corporation, a United States government corporation Foreign direct investment, purchase of an asset in a country by another country's company
Computing Field Device Integration, an International Electrotechnical Commission standards Flexible Display Interface Formatted Disk Image, part of the Unified emulator format
Health and medicine FDI World Dental Federation First dorsal interosseous, muscle in the hand
Politics Brothers of Italy (FdI, from the Italian name Fratelli d'Italia), an Italian political party Foundation for Democracy in Iran, a US-based Iranian dissident organization
Other uses Fault detection and isolation, in control engineering Films Division of India, a government-owned film production company in India Fraud Discovery Institute, a defunct American investment firm , a class of frigates of the French Navy