François Naville (14 June 1883 – 3 April 1968) was a Swiss physician, director of the medico-legal Institute of the University of Geneva, the only truly neutral expert in the international Katyn Commission investigating the Soviet Katyn massacre of some 22,000 Polish prisoners of war, mostly Polish Army officers, arrested and imprisoned in the course of the Soviet and German invasion of Poland. Their bodies were discovered in a series of large mass graves in the forest near Smolensk in Russia following the Nazi German Operation Barbarossa.