IAF may refer to:
Air forces Indian Air Force Indonesian Air Force Iraqi Air Force Islamic Republic of Iran Air Force Israeli Air Force Italian Air Force
Other organizations Independent Arts Foundation, an arts association in Adelaide, Australia Indian Armed Forces, the military forces of the Republic of India Industrial Areas Foundation, a national community organizing network Inter-American Foundation, an independent agency of the United States government International Abolitionist Federation, founded in Liverpool in 1875 International Accreditation Forum, a former world association of Conformity Assessment Accreditation bodies International Aikido Federation, a world governing body for the sport of Aikido International of Anarchist Federations, founded during an international anarchist conference in Carrara in 1968 International Apostolic Fellowship, a fellowship of Apostolic ministers International Astronautical Federation, an international space advocacy organisation Iowa Atheists and Freethinkers, a U.S. non-profit organization Islamic Action Front, an Islamist political party in Jordan Israel Allies Foundation, a pro-Israel advocacy group Iraqi Accord Front, a Sunni Arab-led Iraqi political coalition
Other uses Initial approach fix, where the initial approach segment of an instrument approach begins Intangible asset finance, the branch of finance that deals with intangible assets Integrated Architecture Framework, a recognized architecture method in the Open Group's IT Architecture Certification (ITAC) program Integrate-and-fire, a model for describing neurons Fraunhofer Institute for Applied Solid State Physics, a German institute operated by the Fraunhofer Society Jane's IAF: Israeli Air Force, 1998 video game