IFF, Iff or iff may refer to:
People and characters
People Claude Iff (born 1946), Swiss footballer Simone Iff (1924-2014), French political activist
Characters Iff of the Unpronounceable Name, a character in The Riddle-Master trilogy by Patricia A. McKillip Simon Iff, a character by Aleister Crowley
Arts, entertainment, media International film festival, a type of film festival
Indonesian Film Festival, an annual film festival in Indonesia Ischia Film Festival, an annual film festival held on the island of Ischia, Italy
Inferno, Flame, and Flint, a software by Autodesk Media and Entertainment "IFF", an episode of The Expanse
Mathematics, science, engineering, technology Identification friend or foe, an electronic radio-based identification system for the military If and only if, a biconditional logical connective between statements, where either both statements are true or both are false Iff card, a smart card used on bus services in Cardiff, Wales, United Kingdom Interchange File Format, a computer file format
Organizations
Sports organizations International Fencing Federation (Fédération Internationale d'Escrime or FIE), the international governing body for fencing International Floorball Federation, the global governing body for the sport of floorball Irish Fencing Federation, the governing body for fencing in Ireland
Other organizations Iff Books, an imprint of John Hunt Publishing Independent Fianna Fáil, a political party in Ireland Institute For Figuring, an organization that promotes the public understanding of the poetic and aesthetic dimensions of science, mathematics and the technical arts International Federation of Factory Workers, former trade union international International Flavors & Fragrances, an American corporation which produces flavors and fragrances International Freedom Foundation, a self-described anti-communist group established in Washington, D.C. Fakultät für Interdisziplinäre Forschung und Fortbildung (Faculty for Interdisciplinary Research and Continuing Education), a faculty of the Austrian University of Klagenfurt Internet Freedom Foundation, an Indian digital rights advocacy organisation
Other uses Illicit financial flows, a concept in economics and finance related to resources that are of illegal origin, use or transfer International Finance Facility, proposed by HM Treasury in conjunction with the Department for International Development of the United Kingdom International freight forwarder, an individual or company that books or otherwise arranges space for shipments between countries via common carriers Utaha language (ISO 639 language code iff), also known as Ifo, an extinct language from Erromango, Vanuatu Institut de formation ferroviaire, a Moroccan vocational training institution specializing in professions related to rail transport
See also
If (disambiguation) IIF (disambiguation) Iffs
IF2