Niemienice [ɲɛmjɛˈnit͡sɛ] is a village in the administrative district of Gmina Sadowie, within Opatów County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 4 kilometres (2 mi) south-west of Sadowie, 8 km (5 mi) west of Opatów, and 51 km (32 mi) east of the regional capital Kielce.