National Maritime Union

National Maritime Union
Merged	Seafarers International Union of North America (June 3, 2001)
Founded	May 1937
Headquarters	New York City, New York
Location	United States;
Affiliations	Congress of Industrial Organizations, later AFL–CIO

The National Maritime Union (NMU) was an American labor union founded in May 1937. It affiliated with the Congress of Industrial Organizations (CIO) in July 1937. After a failed merger with a different maritime group in 1988, the union merged with the Seafarers International Union of North America in 2001.