Michał Kozal was a Polish Roman Catholic bishop who lived from 1893 to 1943. Born in Gmina Krotoszyn, he was a dedicated scholar and priest before being appointed as the Auxiliary Bishop of Włocławek in 1939. During the Second World War, he faced intense persecution from Nazi forces for his religious leadership and refusal to comply with Germanization efforts. He eventually died in the Dachau concentration camp after being murdered by a camp doctor, becoming a recognized martyr for his faith.