The Battle of Mirăslău, or Battle of Miriszló, took place on September 18, 1600, near Miriszló (Romanian: Mirăslău), 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.

Basta marched against the Wallachian army which Michael had gathered in the small village of Miriszló (Romanian: Mirăslău), a few kilometers north of the river Mureș.

The Wallachian army numbered approximately 22,000,[1] consisting mainly of mercenaries of different nationalities, including Hungarian Szeklers, Cossacks, and Poles.

Michael's forces began the battle with a well-positioned cannonade from a hillside, while his main troops were protected in the town by 2,000 Szekler gunmen.

In this first stage, many Hungarian noblemen were killed[dubious – discuss] by cannonballs, and the battle appeared to be setting itself as an easy victory for Michael.

After being soon expelled from Wallachia by the Polish troops led by Jan Karol Chodkiewicz, Michael went to Prague to win Rudolf's favour once again.