|Full name||William George Ballsom|
|Date of birth||30 October 1912|
|Place of birth||Trealaw, Wales|
|Date of death||1983|
|Playing position||Right back|
|1934–1935||Tunbridge Wells Rangers|
|* Senior club appearances and goals counted for the domestic league only.
William George Ballsom (30 October 1912 – 1983) was a Welsh professional association football player of the 1930s.
Born in Trealaw, Ballsom joined Gillingham in 1935 from Tunbridge Wells Rangers and went on to make 45 appearances for the club in The Football League. When the club was voted out of the league in 1938, however, he returned to his native Wales and signed for Cardiff City. Taking over from Arthur Granville, Ballsom played in 34 league games for the club during the 1938–39 season and was retained for the following year but the outbreak of World War II meant he did not feature for the club again.
- Triggs, Roger (2001). The Men Who Made Gillingham Football Club. Tempus Publishing Ltd. p. 10. ISBN 0-7524-2243-X.
- Brown, Tony (2003). The Definitive Gillingham F.C.: A Complete Record. Soccerdata. p. 118. ISBN 1-899468-20-X.
- Hayes, Dean (2006). The Who's Who of Cardiff City. Derby: Breedon Books. p. 17. ISBN 1-85983-462-0.
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