Rudnik Duży (Polish pronunciation: [ˈrudɲiɡ ˈduʐɨ]) is a village in the administrative district of Gmina Wodynie, within Siedlce County, Masovian Voivodeship, in east-central Poland. It lies approximately 8 kilometres (5 mi) south-west of Wodynie, 32 km (20 mi) south-west of Siedlce, and 68 km (42 mi) east of Warsaw.