Leon Cohen (Greek: Λεών Κοέν; born 15 January 1910 in Thessaloniki, Greece and died in August 1989 in Bat Yam, Israel), was a Jewish-Greek survivor of the Auschwitz concentration camp. He was a member of the Sonderkommando in Birkenau from May to November 1944. He was one of the only three members of the Sonderkommando who wrote his memoirs after the war, along with Filip Müller and Marcel Nadjary. He took part in the preparation of the Sonderkommando uprising.