The Supreme National Tribunal () was a war crime tribunal active in Poland from 1946 to 1948. The Tribunal aims and purpose were defined by the State National Council in the Decrees of 22 January and 17 October 1946 and 11 April 1947. The new law was based on the earlier Decree of 31 August 1944 issued by the new Polish pro-Soviet government, with jurisdiction over fascist-hitlerite criminals and traitors to the Polish nation. The tribunal presided over seven high-profile cases (of 49 individuals total).