IAF may refer to the following air forces:

  • Indian Air Force
  • Indonesian Air Force
  • Iraqi Air Force
  • Israeli Air Force
  • Italian Air Force

IAF may also refer to:

  • International of Anarchist Federations
  • Indian Armed Forces
  • Inter-American Foundation
  • Intangible asset finance
  • Industrial Areas Foundation
  • Initial approach fix
  • Intelligent Audio File
  • International Accreditation Forum
  • International Apostolic Fellowship
  • International Association of Facilitators
  • International Astronautical Federation
  • International Aikido Federation
  • Fraunhofer Institute for Applied Solid State Physics, a German institute operated by the Fraunhofer Society
  • Islamic Action Front
  • Integrated Architecture Framework, Capgemini developed, A recognized architecture method in the Open Group’s IT Architecture Certification (ITAC) program
  • Integrate-and-fire, a model for describing neurons
  • Iowa Atheists and Freethinkers, a U.S. non-profit organization
  • Iraqi Accord Front, a Sunni Arab led Iraqi political coalition
  • An early version of Oracle Forms software