John Hajnal, FBA (b. 26 November 1924 in Darmstadt, then People's State of Hesse, Weimar Germany – d. 30 November 2008 in London), born John Hajnal-Kónyi, was a Hungarian-British academic in the fields of mathematics and economics (statistics).
The high princes were either elected by the leaders of the tribes or appointed by the Khagan of the Khazars who had been exerting influence over the Magyars.