FOI, foi, or Foi may refer to:
Organisations Family Opera Initiative, an American opera company Fellowship of Isis, an international spiritual organization Forum Oratori Italiani, a Catholic youth organization Fruit of Islam, a paramilitary wing of the Nation of Islam Swedish Defence Research Agency (Swedish: (FOI))
Other uses Freedom of information, the freedom of a person or people to publish and consume information Sainte-Foi, a commune in France Foi, a village in Romania Foi language, Papua New Guinea (ISO 639-3 code: foi) Foi Wambui, (born 1997) a Kenyan actress
See also Saint Faith (French: ), a third-century French saint Foy (disambiguation) Foia (disambiguation)