Biadaszka [bjaˈdaʂka] is a village in the administrative district of Gmina Cieszków, within Milicz County, Lower Silesian Voivodeship, in south-western Poland.

It lies approximately 3 kilometres (2 mi) south-east of Cieszków, 11 kilometres (7 mi) north-east of Milicz, and 59 kilometres (37 mi) north-east of the regional capital Wrocław.