David S. Smart was a Scottish international lawn bowler who competed at the British Empire and Commonwealth Games (now Commonwealth Games).
Smart was a member of the Merchiston Edinburgh Bowling Club and was part of the Merchiston Edinburgh pair with Jim Kerr, that won the District finals to qualify for the 1956 Scottish National Bowls Championships, where they then won the national pairs title.
He represented the 1958 Scottish team at the 1958 British Empire and Commonwealth Games in Cardiff, Wales, where he participated in the pairs event, again with Jim Kerr.
In 1961, Smart was still actively playing bowls and reached the District finals.