Constantine Nicholas "Gus" Keriazakos (July 28, 1931 – May 4, 1996) was an American professional baseball player. He was a 6 ft 3 in (1.91 m), 187 lb (85 kg) right-handed pitcher who worked in 28 games in the Major Leagues in 1950 and 1954–1955 for the Chicago White Sox, Washington Senators and Kansas City Athletics. Keriazakos, a native of West Orange, New Jersey, spent the entire 1954 campaign with Washington, appearing in 22 games, 19 in relief, and posting a creditable earned run average of 3.77. He started three times, and pitched complete games in two of them.