Aleksander Marek Kowalski (October 7, 1940 - ~April 3, 1940) was a Polish hockey player who was one of the top defensemen on the Polish National Team during the 1920s and early 1930s. He appeared with the team in seven major tournaments. At the club level, Kowalski was a member of AZS Warszawa for the duration of his career. He was born in Warsaw, Poland and was killed in the Katyn massacre. His family received the last postcard on February 11, 1940. His exact date of death is unknown, but he was on the list of the NKVD dated April 3, 1940.