David Buck (17 October 1936 – 27 January 1989) was an English actor.
He starred in many television productions from 1959 until 1989. One of his earlier roles was that of Horatio Hornblower in an episode entitled "Hornblower" (1963), in the Alcoa Premiere TV series. He played Winston Smith in Theatre 625: The World of George Orwell: 1984 (1965), a remake of Nigel Kneale's adaptation of the novel. In the first two series of the ITV horror and supernatural anthology series Mystery and Imagination (1966–68) he played the series narrator Richard Beckett (from Sheridan Le Fanu's story "The Flying Dragon") whose character also became involved in some of the other stories adapted. He also had a role as Royal Air ForceSquadron Leader David "Scotty" Scott in the film Mosquito Squadron (1969), with David McCallum in the lead, in which his character is shot down during a low-level bombing raid over Northern France in 1944 and assumed killed.