|Cornered (1945) [Marcel Jarnac]: Beaten to death by Dick Powell. (Thanks to Brian)
The Magic Face (1951) [Rudi Janus/Adolf Hitler]: Playing a dual role, "Hitler" is murdered by his look-alike "Rudi," who then takes his place. (Needless to say, this film is not intended to be historically accurate.)
Hoodlum Empire (1952) [Nick Mansani]: Accidentally shot to death during a struggle with Forrest Tucker, after Luther shoots Claire Trevor.
Voyage of the Damned (1976) [Professor Weiler]: Dies of a heart attack (off-screen) in his cabin. His body is shown afterwards when Oskar Werner is brought in to confirm the cause of death, after which the crew leaves his wife (Wendy Hiller) alone with him to grieve.