Józef Kowalski was a Polish Salesian priest who was killed at the Auschwitz concentration camp during the Second World War. Born in 1911 in Siedliska, he was ordained in Kraków in 1938 and served as a secretary to a Salesian provincial. Following his arrest by the Gestapo in 1941, he was transferred to the concentration camp, where he continued his religious duties in secret. He died in July 1942 at the age of 31, having been murdered by camp guards.