Donald Daniel Houston (6 November 1923 13 October 1991) was a Welsh actor.
He had two star making roles, both in 1949 — The Blue Lagoon and A Run for Your Money. Later in his career, he was typecast in military roles, authority figures and in comedic roles such as the Doctor in the House sitcoms and Carry On film series.
He died on October 13, 1991 of a stroke at age 67.
- The Blue Lagoon (1949) as Michael Reynolds
- Doctor in the House (1954) as Taffy Evans
- The Longest Day (1962) as RAF Pilot
- The 300 Spartans (1962) as Hydarnes
- Carry On Jack (1963) as First Officer Jonathan Howett
- A Study in Terror (1965) as Dr. John Watson
- Where Eagles Dare (1968) as Capt. Olaf Christiansen
- Return of the Saint (1978) as Commander Denning
- Clash of the Titans (1981) as King Acrisius