The International Advertising Association (IAA) is a global association that represents marketers, ad agencies and mass media that carries advertisements. With headquarters in New York, United States, it has chapters in 77 countries. It was founded with the name Export Advertising Association on April 8, 1938 by Thomas Ashwell – a publisher of "Export Trade & Shipper" magazines, along with 12 other managers from the advertising industry in the Harvard Club of New York. Their goal was to exchange information about successful practices in international advertising. In 1954, it adopted its current name.

IAA as an international industry association positions itself as a platform for advertising industry issues, and as an organization that protects and advances the freedom of commercial speech, responsible advertising, consumer choice, and the education of marketing professionals by researching and providing advertising regulation literature in many countries of the world. The International Advertising Association has conducted and summarized surveys over the years, on culturally sensitive topics such as the relative use and permissibility of "sex and decency" in advertisements.