born Samuel Gilleland
- Bats Unknown, Throws Unknown
- Height 5' 8"
- Debut August 19, 1893
- Final Game August 5, 1897
- Born November 14, 1867 in Pittsburgh, PA USA
- Died May 13, 1905 in Pittsburgh, PA USA
Sam Gillen, born in Pittsburgh, PA, played for both the Pittsburgh Pirates in 1893 and the Philadelphia Phillies in 1897. By far the most of his appearances were in 1897, when he is listed as the regular shortstop for the Phillies.
Sam's minor league career ran from 1890-1899, and included five seasons in the Western League.