Sergey Kazakov (born 9 November 1953) is a former international speedway rider from the Soviet Union.
Kazakov is a two-time world champion. He won gold medals at the Individual Ice Speedway World Championship in the 1982 Individual Ice Speedway World Championship and the 1983 Individual Ice Speedway World Championship.
In addition, he won the Team Ice Racing World Championship four times (1982, 1984, 1988, and 1990).