John Boulger (born 18 June 1945 in Adelaide, South Australia) is a former international motorcycle speedway rider. After he retired from riding Solos in the early 1980s, Boulger raced somewhat successfully in Speedcars (Midgets) from the mid-1980s until the mid-1990s. Boulger won a record nine South Australian Championships (a record jointly held with 1951 and 1952 World Champion Jack Young) as well as two Australian Solo Championships during his career.