Every four years, the IAAP organizes a world congress of applied psychology which serves as a review of advances in applied psychology and unites several thousand psychologists from all over the world. The 25^th ICAP was held in Singapore; the 26^th in Athens in 2006; the 27^th in Melbourne in 2010; and the 28^th in Paris. The 29^th ICAP will be held in Montreal, Quebec in Canada from June 26-30, 2018. These congresses belong to the main responsibilities of IAAP inasmuch as they are particularly suited instruments to pursue the Association’s mission of bringing applied psychologists in world-wide contact with each other. In addition, the ICAP offers the unique opportunity to demonstrate the societal significance of applied psychology.