Zygmuntowo [zɨɡmunˈtɔvɔ] is a village in the administrative district of Gmina Długosiodło, within Wyszków County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) south-west of Długosiodło, 16 km (10 mi) north of Wyszków, and 67 km (42 mi) north-east of Warsaw.