Ruszcza-Płaszczyzna [ˈruʂt͡ʂa pwaʂˈt͡ʂɨzna] is a village in the administrative district of Gmina Łoniów, within Sandomierz County, Świętokrzyskie Voivodeship, in south-central Poland. It lies approximately 4 kilometres (2 mi) west of Łoniów, 23 km (14 mi) south-west of Sandomierz, and 70 km (43 mi) south-east of the regional capital Kielce.