Marion Mushkat or Marian Muszkat (November 5, 1909 – September 30, 1995), was a Polish lawyer, colonel in the Polish Army formed in the Soviet Union, and military judge in Stalinist Poland specialising in international public law, military law and international affairs.

He immigrated to Israel at the end of Stalinist period in postwar Poland, where he became a professor at Tel Aviv University.

In Warsaw Muszkat studied law, and simultaneously worked as a clerk in factories and as a school teacher.

After his return to Poland with the Soviet westward offensive in 1945, he became a member of Polish Workers' Party (PPR).

Muszkat was a specialist in the field of international public law, therefore the Ministry of Justice dispatched him to Nuremberg, as chairperson of the Polish delegation.

[2] He also lectured at the Central Law School, General Headquarters Academy and Polish International Affairs Institute (from 1950-1951 as its director).

For instance prof. Stefan Korboński wrote later that "Muszkat's views transformed the courts into a political institution, with prosecutors as masters of life and death of absolutely everyone (...) and barristers, as communist police helpers.

Muszkat is author of many publications edited in: Polish, English, French, Hebrew, German, Russian, Czech, Hungarian and Chinese, too.