Guilty of Treason is a 1950 American drama film directed by Felix E. Feist and starring Charles Bickford, Bonita Granville and Paul Kelly.

Also known by the alternative title Treason, it is an anti-communist and anti-Soviet film about the story of József Mindszenty, a Roman Catholic cardinal from Hungary.

The film uses the framing device of a speech to members of the Overseas Press Club of America by a journalist who has just returned from Budapest where he witnessed the treason trial of Mindszenty.

He also tells the story of Stephanie Varna, a young teacher who decides to stake a moral stand against Communism despite her love for a Russian officer.

It was part of a cycle of anti-communist British and American films released in the late 1940s and early 1950s as the Cold War intensified.