John Dean Collum (June 21, 1927 – August 29, 2009) was a pitcher in Major League Baseball (MLB) who played for eight different teams between the 1951 and 1962 seasons.

[1] Collum served in World War II with the United States Army Air Forces in the Pacific Theatre of Operations,[2] where he was stationed in the Philippines.

After spending two years out of baseball, he rejoined the Cardinals in 1956 and also pitched with the Chicago Cubs in 1957 and for two Dodgers teams; in 1957, when they were leaving Brooklyn for the sunny skies of Los Angeles starting the 1958 season.

[3] Collum's most productive season came with Cincinnati in 1955, when he recorded career-numbers in wins (9), earned run average (3.63) and complete games (5), while pitching 134 innings.

In a nine-season career, Collum posted a 32–28 record with a 4.15 ERA in 171 appearances, including 37 starts, 11 complete games, two shutouts, 12 saves, 171 strikeouts and 173 walks in 464 innings of work.