Karl Friedrich "Fritz" Zubeil (11 January 1848, in Leśniów Wielki, District Grünberg in Silesia – 27 December 1926, in Berlin) was a German politician (SPD; USPD).
Zubeil represented the SPD as a member of the Reichstag of the German Empire from June 1893, a position that he held henceforth without interruption until November 1918.
At this time, the SPD leadership, to which Zubeil also temporarily belonged, met on the fourth floor of the same house.
[3] In January 1919 Zubeil was candidate of the USPD for the constituency 5 (Potsdam 10) and was elected into the Weimar National Assembly.
[4] In June 1920 Zubeil obtained a seat for the Constituency 3 (Potsdam II) in the first Reichstag of the Weimar Republic.