The Battle of Mirăslău, or Battle of Miriszló, took place on September 18, 1600, near Miriszló, Transylvania, between the Wallachian troops led by Michael the Brave supported by ethnic Hungarian Szeklers and the troops of Austrian general Giorgio Basta supported by the Hungarian nobility of Transylvania.

Michael the Brave, born as Mihai Pătrașcu, was the Prince of Wallachia, Prince of Moldavia (1600) and de facto ruler of Transylvania (1599–1600). He is considered one of Romania's greatest national heroes. Since the 19th century, Michael the Brave has been regarded by Romanian nationalists as a symbol of Romanian unity, as his reign marked the first time all principalities inhabited by Romanians were under the same ruler.