Gniewoszów [ɡɲeˈvɔʂuf] (German: Seitendorf) is a village in the administrative district of Gmina Międzylesie, within Kłodzko County, Lower Silesian Voivodeship, in south-western Poland on Central Sudetes mountain range. Prior to 1945 it used to belong to Germany.
It lies approximately 8 kilometres (5 mi) north-west of Międzylesie, 27 kilometres (17 mi) south of Kłodzko, and 108 kilometres (67 mi) south of the regional capital Wrocław.