Joseph Laughlin ("Lachie") Stewart (born 22 June 1943 in Vale of Leven, West Dunbartonshire) is a Scottish former distance runner, and an inductee in the Scottish Sports Hall of Fame.
Stewart's athletic career saw him compete at the 1970 Commonwealth Games in Edinburgh, where he won Gold in the 10,000 metres over Ron Clarke of Australia, and the 1972 Summer Olympics in Munich.[1]