Count József Hilarius Sergius Marius Franz Anton Johann Nepomucen Károlyi de Nagykároly (7 October 1768 – 4 April 1803), was a Hungarian nobleman and soldier.

[4] He was educated at the Collegium pauperum nobilium in Vác, which was run by the Piarists under the direction of Cardinal Christoph Bartholomäus Anton Migazzi, the Prince-Archbishop of Vienna.

While in school, he traveled extensively around Europe with his father, including dining with Chancellor Ferenc Esterházy, and attending an audience with Queen Maria Theresa.

They set off for the Szombathely camp in mid-June, but the warring parties reached the Treaty of Campo Formio on 17 October 1797, which meant that their deployment was cancelled.

[7] Together, they were the parents of seven children, six of who survived to adulthood, including:[1] After receiving a wound in a duel over a woman, Károlyi died, at the age of 34, in Vienna on 4 April 1803.