Les McDowall (25 October 1912 – 18 August 1991) was a Scottish football player and manager. He managed Manchester City between 1950 and 1963, and then Oldham Athletic until 1965. McDowall was the longest serving manager in Manchester City's history, his tenure spanning 13 years. The club was languishing in the second tier of English football, McDowall set to work building a solid team and soon saw the fruits of his labour, with the club returning to the first division the following season. He died 18 August 1991 at the age of 78. McDowall was an active freemason.