Count János Hadik de Futak (23 November 1863 in Pálócz – 10 December 1933 in Budapest) was a Hungarian landowner and politician who served for 17 hours as Prime Minister of Hungary, beginning on 30 October 1918.
His tenure coincided with a period of political instability in Hungary immediately after World War I, during which several successive governments ruled the country.
He was forced to resign at the outbreak of the Aster Revolution on 31 October 1918, serving the shortest tenure of any Hungarian Prime Minister.