IAB

IAB may refer to:

Internal affairs (law enforcement) (Internal Affairs Bureau)
Internet Architecture Board, committee charged with oversight of the technical and engineering development of the Internet by the Internet Society
McConnell Air Force Base, Wichita, Kansas, United States, IATA airport code
Individual Address Block (computers and computer networking)
Infantry Assault Badge, German war badge awarded to Waffen SS and Wehrmacht Heer soldiers during WWII
International Association of Bryologists, a professional organization for bryologists
Interactive Advertising Bureau, advertising business organization that develops industry standards, conducts research, and provides legal support for the online advertising industry
Internet Advertising Bureau, a global collection of trade associations for digital advertising
International Accounting Bulletin, an UK accounting publication focusing on global issues

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