Keystone Park is a former baseball ground located in Philadelphia, Pennsylvania. The ground was home to the Philadelphia Keystones of the Union Association in 1884.
The boundaries of the ballpark are reported as Broad Street; Wharton Street; Moore Street; 11th Street.[Michael Benson, Ballparks of North America, McFarland, 1989, p. 297] Moore Street is several blocks to the south.
The field was the original grounds of the Forepaugh Circus.(Rich Westcott, Philadelphia's Old Ballparks, Temple University Press, 1996, p. 6.) Not to be confused with the later Forepaugh Park.