William Gordon Bonham (born October 1, 1948) is an American former pitcher for the Chicago Cubs (1971–77) and Cincinnati Reds (1978–80).

He played for the UCLA Bruins and was a member of the 1969 College World Series team with Chris Chambliss.

[1] He helped the Reds win the 1979 National League Western Division.

On July 31, 1974, Bonham tied a Major League record (shared by 49 pitchers) by striking out four batters in an inning (2nd).

He also led the National League in earned runs allowed (120) in 1975.