Franz, Freiherr von Petrasch (1746 – 17 January 1820) was an Austrian general officer serving in the Austrian Empire during the French Revolutionary Wars. He was the third generation of a bourgeois family in which two brothers, seeking adventure, joined the Habsburg military and rose through the ranks. The family was elevated to the Moravia nobility in the early eighteenth century, and to the Hungarian nobility in 1722.
Franz Petrasch served throughout the Habsburg's wars with France, in particular the Rhine Campaign of 1796 and the Swiss campaigns of 1799.