Zagaje massacre was a mass murder of ethnic Poles carried out on 1112 July 1943 by the troops of the Ukrainian Insurgent Army group "Piwnicz", aided by the Ukrainian peasants, during the Massacres of Poles in Volhynia and Eastern Galicia. Approximately 260350 people were killed, including women and children. The village Zagaje was levelled out and does not exist anymore. It was located in the gmina Podberezie of the Horochów County ("powiat horochowski") in the Wołyń Voivodeship of the Second Polish Republic (now, Horokhiv Raion, Ukraine). Overall, in the Horochów County some 4,200 ethnic Poles were murdered, in nearly hundreds of separate locations before the end of the Polish-Ukrainian conflict. The village Zagaje is not to be confused with the Zagaje colony, located in gmina Czaruków, powiat Łuck, of the same voivodeship.