Żeleźniki [ʐɛlɛʑˈniki] is a village in the administrative district of Gmina Miedzna, within Węgrów County, Masovian Voivodeship, in east-central Poland. It lies approximately 3 kilometres (2 mi) south-west of Miedzna, 8 km (5 mi) north-east of Węgrów, and 77 km (48 mi) east of Warsaw.