Petar IV Zrinski (Hungarian: Zrínyi Péter) (6 June 1621 – 30 April 1671) was Ban of Croatia (Viceroy) from 1665 to 1670, general and a writer. A member of the Zrinski noble family, he was noted for his role in the attempted Croatian-Hungarian Magnate conspiracy to overthrow the Habsburgs, which ultimately led to his execution for high treason.