The 33-year-old English actress, 48-year-old French actress and 34-year-old American actor will serve alongside Spanish actress Rossy de Palma, Malian composer Rokia Traore, Spanish director Guillermo del Toro and Canadian director Xavier Dolan.
Directors Joel and Ethan Cohen will act as co-Presidents of the Jury at the 68th annual event, the first time two people have shared the position. The nine members of the jury will vote to decide the festival winners, culminating in the prestigious Palme d'Or award.
A Justin Kurzel adaptation of Macbeth starring Michael Fassbender, Gus Van Sant drama The Sea of Trees starring Matthew McConaughey and Taiwanese martial arts film The Assassin are among the films in competition. The Cannes Film Festival will run May 13 to 24.