Claude Rains (November 10, 1889 – May 30, 1967) was an English stage and film actor whose career spanned 47 years; he later held American citizenship. He was known for many roles in Hollywood films, among them the title role in The Invisible Man (1933), a corrupt senator in Mr. Smith Goes to Washington (1939), and Captain Renault in Casablanca (1942).

Rains was born William Claude Rains in Camberwell, London on November 10, 1889. He grew up, according to his daughter, with "a very serious cockney accent and a speech impediment". His father was British stage actor Frederick Rains, and the young Rains made his stage debut at 11 in Nell of Old Drury.