High treason is criminal disloyalty to one's country.
High Treason may also refer to:
Film, television and theater High Treason, a 1927 play by Noel Pemberton Billing High Treason (1929 British film), an adaptation of Billing's play, by Maurice Elvey High Treason (1929 German film), a silent film directed by Johannes Meyer High Treason (1951 film), a British espionage thriller by Roy Boulting "High Treason" (The Adventures of Brisco County, Jr.), a 1994 two-part TV episode "High Treason" (BMF), a 2023 TV episode of BMF
Other uses Act of War: High Treason, a 2006 expansion pack for the video game Act of War: Direct Action "High Treason", a 1966 short story by Poul Anderson "High Treason", a song by Memorain from White Line High Treason: The Assassination of J.F.K. and the Case for Conspiracy, a 1993 book by Robert J. Groden and Harrison Edward Livingstone
See also High Treason Incident, a 1910 plot to assassinate the Japanese Emperor Meiji Treason (disambiguation) Traitor (disambiguation)