The Negro Leagues Baseball Museum (NLBM) is a privately funded museum dedicated to preserving the history of Negro league baseball in America. It was founded in 1990 in Kansas City, Missouri, in the historic 18th & Vine District, the hub of African-American cultural activity in Kansas City during the first half of the 20th century. The NLBM shares its building with the American Jazz Museum.

The Negro leagues were United States professional baseball leagues comprising teams of African Americans. The term may be used broadly to include professional black teams outside the leagues and it may be used narrowly for the seven relatively successful leagues beginning in 1920 that are sometimes termed "Negro Major Leagues".