Dennistoun Franklyn John Rose Price (23 June 1915 – 6 October 1973) was an English actor, best remembered for his role as Louis Mazzini in the film Kind Hearts and Coronets (1949) and for his portrayal of the omniscient valet Jeeves in 1960s television adaptations of P. G. Wodehouse's stories.
Price was married to the actress Joan Schofield from 1939 to 1950. They had two daughters. Price was bisexual.In April 1954, he tried to commit suicide by gas in a London guest house. Public sympathy led to a revival of his career and the offer of film roles.
Price was born in Ruscombe in Berkshire. He had distant Welsh family connections, and was the son of Brigadier-General Thomas Rose Caradoc Price (1875–1949) CMG DSO (who was a great-grandson of Sir Rose Price, 1st Baronet and, through his mother, a descendant of the Baillie baronets of Polkemmet, near Whitburn, West Lothian) and his wife Dorothy, née Verey, daughter of Sir Henry Verey, Official Referee of the Supreme Court of Judicature. He attended Copthorne Prep School, Radley College and Worcester College, Oxford. He studied acting at the Embassy Theatre School of Acting.