Michael Sacco (February 14, 1937 – December 28, 2023) was an American labor leader from Brooklyn, New York.

[1] He was appointed as the president of the Seafarers International Union of North America, AFL-CIO in June 1988 by the SIUNA Executive Board.

[1] From 1968 to 1979 he was vice president of the Seafarers Harry Lundeberg School of Seamanship,[1] the union's vocational training facility in Piney Point, Maryland.

From 1980 to 1988, Sacco was vice president of the SIUNA-affiliated Seafarers International Union; Atlantic, Gulf, Lakes and Inland Waters District.

He was also secretary-treasurer of the Greater St. Louis Area and Vicinity Port Council and an executive board member of the Missouri State AFL-CIO.