Żelazna Prywatna [ʐɛˈlazna prɨˈvatna] is a village in the administrative district of Gmina Jednorożec, within Przasnysz County, Masovian Voivodeship, in east-central Poland. It lies approximately 12 kilometres (7 mi) north-east of Jednorożec, 30 km (19 mi) north-east of Przasnysz, and 113 km (70 mi) north of Warsaw.