Stok Ruski [ˈstɔk ˈruski] is a village in the administrative district of Gmina Mordy, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) west of Mordy, 14 km (9 mi) north-east of Siedlce, and 99 km (62 mi) east of Warsaw.