Károly Unkelhäusser (15 January 1866 in Vukovar – 20 February 1938) was a Hungarian politician who served as Minister without portfolio of Croatian Affairs between 1917 and 1918. From 20 December 1912 he substituted Slavko Cuvaj until the ban's definitive replacement. He was the substitute of the province chief of Bosnia and Herzegovina between 1915 and 1917, but he left this position for the Croatian Affairs ministerial post. He was deprived of his function as a result of the Aster Revolution. From 2 November he served as designated Ban of Croatia. His commission was in order to proclaim Dalm