Jan Mosdorf (30 May 1904, Warsaw - 11 October 1943, Auschwitz), was a Polish right-wing politician, director of the nationalist organization All-Polish Youth (Młodzież Wszechpolska, MW) and member of the far-right political party National Radical Camp (ONR). He also worked as a publicist, using the pseudonym Andrzej Witkowski. Mosdorf died in Auschwitz concentration camp in 1943, killed for helping Jews.
Mosdorf associated himself with the National Democratic movement (founded by Roman Dmowski) some time in 1926. Two years later, he completed his philosophy studies, earning an M.A. degree (later, he also earned a PhD in philosophy, writing about works of Auguste Comte, under supervision of Prof. Władysław Tatarkiewicz). As a student, he was a member of several right-wing youth organizations. He wrote articles for nationalist magazines, always claiming that Germany was Poland’s main enemy and that Poland should gain control over the Western part of Upper Silesia and Masuria.
In 1928, during the IV Congress of the MW, which took place in Lwów, he was elected director of the organization. Mosdorf was widely liked by fellow members of the MW; his appearances were always associated with applause. Later on, he had to hide for some time because he was a member of the ONR, and the government had incarcerated several activists of the organization in the Bereza Kartuska prison.
We [Polish nationalists] are not fascists, nor Hitlerites, for we are a native Polish movement, independent of foreign views. Additionally, we do not see ourselves as fascists or Nazis due to the many weaknesses, and even sins, these movements carry. These are not examples we would want to follow.- Jan Mosdorf "Wczoraj i Jutro", 1938