Postaszowice [pɔstaʂɔˈvit͡sɛ] is a village in the administrative district of Gmina Niegowa, within Myszków County, Silesian Voivodeship, in southern Poland. It lies approximately 2 kilometres (1 mi) north of Niegowa, 15 km (9 mi) north-east of Myszków, and 58 km (36 mi) north-east of the regional capital Katowice.