Oscar McKinley Charleston was an American center fielder and manager in Negro league baseball. Over his 43-year baseball career, Charleston played or managed with more than a dozen teams, including the Homestead Grays and the Pittsburgh Crawfords, Negro league baseball's leading teams in the 1930s. He also played nine winter seasons in Cuba and in numerous exhibition games against white major leaguers. He was inducted into the National Baseball Hall of Fame in 1976.

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".