Ernst von Mansfeld

Graf von Mansfeld
Bornc. 1580
Died29 November 1626 (aged c. 46)
Years active1595–1626
FatherPeter Ernst I von Mansfeld-Vorderort

Peter Ernst, Graf von Mansfeld (German: Peter Ernst Graf von Mansfeld; c. 1580  29 November 1626), or simply Ernst von Mansfeld, was a German military commander; despite being a Catholic, he fought for the Protestants during the early years of the Thirty Years' War. He was one of the leading mercenary generals of the early war.