The first UPA attack on Mizocz - an attack by Ukrainian Insurgent Army units on the town of Mizocz, located in the Zdolbunov district of Volhynia province, and battles with a Hungarian army unit and police, combined with the murder of more than 100 Poles and the burning of most of the village buildings. The attack took place on the night of 24 to 25 August or 31 August to 1 September 1943, during the German occupation. The consequence of the attack was the evacuation of the surviving Polish civilians to Zdolbunov.