Clytus George "Cy" Bentley (November 23, 1850 – February 26, 1873) was an American Major League Baseball pitcher who played one season in professional baseball, for the 1872 Middletown Mansfields of the National Association.

Born in East Haven, Connecticut, Bentley played his only season in professional baseball for the 1872 Middletown Mansfields.

[2] He gave up 285 baserunners (273 hits and 12 walks), 252 runs, 105 of them were earned.

[1] Bentley's two victories came against the Cleveland Forest Citys (10-5) and the Washington Nationals (28-23), both in the month of May.

[3] Bentley, an iron moulder during the off-season,[4] died on February 26, 1873, 6½ months after the end of the 1872 season, of consumption[5] in Middletown, Connecticut, and is interred at the Church of the Holy Trinity.