Royal Flash is a 1975 British adventure comedy film based on the second Flashman novel by George MacDonald Fraser. It stars Malcolm McDowell as Flashman. Additionally, Oliver Reed appeared in the role of Otto von Bismarck, Alan Bates as Rudi von Sternberg, and Florinda Bolkan played Lola Montez. Fraser wrote the screenplay and the film was directed by Richard Lester.

Sir Harry Paget Flashman is a fictional character created by Thomas Hughes (1822–1896) in the semi-autobiographical Tom Brown's School Days (1857) and later developed by George MacDonald Fraser (1925–2008). Harry Flashman appears in a series of 12 of Fraser's books, collectively known as The Flashman Papers, with covers illustrated by Arthur Barbosa and Gino D’Achille. Flashman was played by Malcolm McDowell in the Richard Lester 1975 film Royal Flash.