There were several ships of the Polish Navy bearing the name of ORP Ślązak (): , an A56-class torpedo boat serving with the Polish Navy between 1921 and 1937, a former German A-59 , a serving during the World War II , an M-XV-class (build 96) submarine built in the Soviet Union and commissioned in 1954. is a , commissioned in November 2019 and in active service.