Blanc will work closely with former Inter Milan and AC Milan boss Leonardo at the French club.
Leonardo is currently director of football at Paris St Germain and brought in players such as Javier Pastore over the summer.
“We’re very happy to welcome Jean-Claude Blanc, a great professional in the field of sport, whose expertise will help us achieve the goals of success that we have set out,” PSG owner Qatar Sport Investments president Nasser Al-Khelaifi announced.
