Ludwinowo [ludviˈnɔvɔ] is a village in the administrative district of Gmina Goworowo, within Ostrołęka County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) west of Goworowo, 20 km (12 mi) south of Ostrołęka, and 84 km (52 mi) north-east of Warsaw.