Marian Stanislaw Chodacki (July 15, 1898, Nowy Sacz - June 26, 1975, New York City) – certified colonel of the infantry branch of the Polish Army under the Second Republic, diplomat, the last Commissioner General of the Republic of Poland in the Free City of Gdansk in the years 1936-1939, executive director of the Józef Pilsudski Institute of America in the years 1949-1951.