The Middle States League was a minor league baseball league that operated in the Northeast United States in 1889. A total of 13 teams competed in the league, though several joined the original 8-team lineup after its April 28 start and several folded before its September 10 close. It was a racially integrated league that included two African American teams, the Cuban Giants and New York Gorhams.The Harrisburg Ponies won the league pennant.