Deutsch Abkürzungen von iana bis iatul
- IANA (Internet Assigned Numbers Authority)
- IANC (International Airline Navigators Council)
- IANEC (Inter-American Nuclear Energy Commission)
- IAO ([Fraunhofer-]Institut für Arbeitswirtschaft und Organisation)
- i.ao.D. (im au)
- IAP ([Fraunhofer-]Institut für Angewandte Polymerforschung)
- IAPA (Inter-American Press Association)
- IAPC (International Auditing Practices Committee)
- IAPCO (International Association of Professional Congress Organizers)
- IAPH (International Association of Ports and Harbours)
- IAPIP (International Association for the Protection of Industrial Property)
- IAPO (International Association of Physical Oceanography)
- IAPS (International Academy of Political Science)
- IAPTC (International Association for Peace-Keeping Training Centers)
- IAR (International Authority for the Ruhr)
- IARA (Inter-Allied Reparations Agency)
- IArbA (Internationales Arbeitsamt)
- IARC (International Agency for Research on Cancer)
- IARU (International Amateur Radio Union)
- IAS (Indicated Airspeed)
- IASA (International Air Safety Association)
- IASB (International Aircraft Standard Bureau)
- IASC (International Accounting Standards Committee)
- IASI (Inter-American Statistical Institute)
- IASP (International Association for Social Progress)
- IASV (Internationale Arbeitsgemeinschaft von Sortimentsbuchhändler-Vereinigungen)
- IAT (Institut für Angewandte Trainingswissenschaft)
- IATA (International Air Transport Association; siehe auch)
- IATM (International Association for Testing Materials)
- IATME (International Association of Terrestrial Magnetism and Electricity)
- IATO (Internationale Arbeitsgemeinschaft der Theaterbesucherorganisationen)
- IATU (Inter-American Telecommunications Union)
- IATUL (International Association of Technical University Libraries)