Gostkowo [ɡɔstˈkɔvɔ] is a village in the administrative district of Gmina Obryte, within Pułtusk County, Masovian Voivodeship, in east-central Poland. It lies approximately 7 kilometres (4 mi) north of Obryte, 15 km (9 mi) north-east of Pułtusk, and 65 km (40 mi) north of Warsaw.