IAG

IAG may refer to:

Airport code

 * Niagara Falls International Airport

Companies

 * Individualized Apparel Group, American clothing holding company
 * Industrial Alliance Group, Canadian Insurance Company
 * Insurance Australia Group, an insurance company in Australia
 * International Airlines Group, holding company of Aer Lingus, British Airways, Iberia, Level and Vueling
 * International Audio Group, a manufacturer of hi-fi equipment

Other

 * IAg, Immersion Silver plating, a conductor plating technology used for printed circuit boards
 * I Am Ghost, a post-hardcore band from Long Beach, California
 * I Am Groot, a series of animated shorts
 * Idiopathic adolescent gynecomastia, a medical condition
 * International Association of Geodesy, part of the International Union of Geodesy and Geophysics
 * Iraq Assistance Group, a former U.S. military command
 * Louvain School of Management, formerly Institut d'Administration et de Gestion of the University of Louvain (UCLouvain)
 * Microsoft Intelligent Application Gateway, a combined hardware and software computer product by Microsoft