The Great Impersonation is a 1942 American thriller film directed by John Rawlins and starring Ralph Bellamy, Evelyn Ankers and Aubrey Mather.

Sir Edward Dominey (Ralph Bellamy) and Baron Leopold von Ragenstein are spitting images of each other and have known one another since their days at Eton College in England.

The story picks up as Dominey is found severely ill in the Dakar jungle and is brought into his old college buddy's camp, where he heals from his injuries.

Some time later, the German High Command sanctions Ragenstein's mission to go undercover into Britain and infiltrate the English upper ranks.

Ragensteins sets out to get the plans from a relative to Dominey's wife, Sir Ronald Clayfair (Aubrey Mather), who is the British Minister of Home Defense.

Unfortunately Ragenstain is recognized as himself at the dinner, by an old friend and mistress, Baroness Stephanie Idenbraum (Kaaren Verne), whom he has to socialize with to avoid suspicion.

Captain Francois Bardinet (Edward Norris) of the French Consulate, who is a guest at the dinner, claims that the baroness' husband was killed in a duel a few years ago by an unidentified, mysterious lover.