At Cannes Film Festival 2018, the best actor honour went to-

It was first awarded in 1946. The ceremony was cancelled in 1948, 1950, and 1968. No awards were given to actors in 1947 and 1956. On four occasions, the jury has awarded multiple men (more than 2) the prize from one film. The four films were A Big Family in 1955, Compulsion in 1959, Long Day's Journey into Night in 1962, and Days of Glory in 2006. The award can be for lead or supporting roles with the exception of the period from 1979 to 1981 and 1991, when the festival used to award a separate "Best Supporting Actor" prize.