Błachów [ˈbwaxuf] is a village in the administrative district of Gmina Dobrodzień, within Olesno County, Opole Voivodeship, in south-western Poland. It lies approximately 3 kilometres (2 mi) west of Dobrodzień, 17 km (11 mi) south of Olesno, and 35 km (22 mi) east of the regional capital Opole.