Franziskus von Paula Herzan von Harras or František de Paula Hrzán z Harasova (5 April 1735, in Prague – 1 June 1804, in Vienna) was a Roman Catholic cardinal from what is now the Czech Republic.

Baptized on 9 April 1735, von Harras graduated from the Gregoriana in Rome on 29 March 1757 - at that time he was living in the German College.

He was made a cardinal on 12 July 1779 by Pope Pius VI and 11 December 1780 granted the titular church of San Girolamo degli Schiavoni.

He served as imperial commissioner at the papal conclave of 1799 to 1800, presenting Francis II's objections to the selection of Cardinals Hyacinthe Sigismond Gerdil and Carlo Antonio Giuseppe Bellisomi.

[1] That conclave selected pope Pius VII, who on 12 May 1800 made von Harras bishop of Szombathely - his appointment ceremony took place on Sunday 18 May 1800 in the monastic church of San Giorgio Maggiore in Venice.