David Gregory "Dave" Smith (born 24 July 1955) is a retired male race walker from Australia, who represented his native country at two consecutive Summer Olympics, starting in 1980 (Moscow). His best Olympic result was finishing in tenth place in the men's 20 km race at the 1984 Summer Olympics.
A racer born in 1975 finished tenth in the 1984 olympic 20 km men's race.