John Dean Collum (June 21, 1927 – August 29, 2009) was a pitcher in Major League Baseball who played for eight different teams between the 1951 and 1962 seasons. Listed at 5 ft 7 in (1.70 m), 163 lb., Collum batted and threw left-handed. He was born in Victor, Iowa.Collum was one of four children of John Edward Collum and Sophia Louise Lohman and the youngest of three brothers.