Donald Daniel Houston (6 November 1923 – 13 October 1991) was a Welsh actor whose first two films – The Blue Lagoon (1949) with Jean Simmons, and A Run for Your Money (1949) with Sir Alec Guinness – were highly successful. Later in his career he was cast in military roles and in comedies such as the Doctor and Carry On series.Houston was born in Tonypandy, Glamorgan, and was the elder brother of actor Glyn Houston.