David Mowat Watson (1891–1972) was a British civil engineer.
[2] His father was John Duncan Watson, a civil engineer regarded as a pioneer in the development of sewage treatment.
[1] David Watson served as a temporary officer in the Yeomanry of the Territorial Force of the British Army during the First World War.
[5] After the war Watson became a civil engineer, going into professional practice with his retired father by 1940.
He became a Lieutenant-Colonel in the corps on 29 October 1943 and was promoted to colonel on 26 February 1949.