Lion Feuchtwanger (7 July 1884 – 21 December 1958) was a Jewish novelist and playwright, born in Germany, eventually moving to the United States. He is most known for a rather indirect association with the 1940 anti-Semitic film Jud Süß, but he himself made various grandiose claims regarding his own importance, such as supposedly being the "Enemy of the state number one" of National Socialist Germany. Sources such as the leftist Wikipedia accept these claims uncritically.
Born in Germany, after some success as a playwright, Feuchtwanger shifted his emphasis to the historical novel. His most successful work in this genre was the novel Jud Süß (Jew Süss) (written 1921-22, first published in Munich in 1925), later published in numerous languages. The July 1929 English language reprint boasted it had sold 98,000 copies. Jud Süß was fiction inspired by the life of the real "Court Jew" Joseph Süß Oppenheimer, executed in 1738. Regarding the related films, with the 1940 National Socilist Germany one being the most known and stated to be a response to a 1934 Jewish-British film based on Feuchtwanger's book, see Jud Süß.
Feuchtwanger left Germany for France in association with the NSDAP gaining power in 1933. He was one of many who had their citizenship revoked. Various allegation are made in associations with this, such as Feuchtwanger even alleging that he had been designated "Enemy of the state number one".
He was interested in Soviet Communism, visited the Soviet Union briefly, and in his book Moskau 1937, he praised life under Joseph Stalin. Feuchtwanger also defended the Great Purge and the show trials that were then taking place.
When the Germans invaded France in 1940, he supposedly had a dramatic escape from France, as told in his book The Devil in France.
During "'McCarthyism", he became the target of suspicion as a Pro-Soviet intellectual.
He later became a Zionist.