Żelazno [ʐɛˈlaznɔ] is a village in the administrative district of Gmina Krzywiń, within Kościan County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 6 kilometres (4 mi) south-east of Krzywiń, 24 km (15 mi) south-east of Kościan, and 52 km (32 mi) south of the regional capital Poznań.