John Roy Dook (23 August 1907 – June 1980) was an English motorcycle speedway rider.
[3] The following season in 1930, he was signed by his home town club West Ham Hammers but struggled to cement a place in the team[4] and returned to ride for Lea Bridge in 1931.
[8] In 1935, his season was interrupted by a dislocated shoulder and a significant muscle injury and while with New Cross in 1936, he doubled up for Bristol Bulldogs to race in the 1936 Provincial Speedway League.
It was at Bristol that he gained most of his success, helping the team to become the 1937 Provincial league champions.
[10] In his final season with Birmingham in 1948, he contributed towards the Brummies winning both the National Trophy and Anniversary Cup for division 2 teams.