Knight Without Armour (styled as Knight Without Armor in some releases) is a 1937 British historical drama film starring Marlene Dietrich and Robert Donat. It was directed by Jacques Feyder and produced by Alexander Korda from a screenplay by Lajos Bíró adapted by Frances Marion from the 1933 novel by James Hilton. The novel was published in the United States as Without Armour. The music score was by Miklós Rózsa, his first for a motion picture, using additional music by Tchaikovsky.

Plot

Englishman A. J. Fothergill is recruited by Colonel Forrester to spy on Russia for the British government because he can speak the language fluently. As "Peter Ouranoff", he infiltrates a revolutionary group led by Axelstein. The radicals try to blow up General Gregor Vladinoff, the father of Alexandra Adraxine. When the attempt fails, the would-be assassin is shot, but manages to reach Peter's apartment, where he dies. For his inadvertent involvement, Peter is sent to Siberia.