Biadaczew [bjaˈdat͡ʂɛf] is a village in the administrative district of Gmina Burzenin, within Sieradz County, Łódź Voivodeship, in central Poland. It lies approximately 5 kilometres (3 mi) south-west of Burzenin, 19 km (12 mi) south of Sieradz, and 62 km (39 mi) south-west of the regional capital Łódź.