Zamostowo [zamɔsˈtɔvɔ] is a village in the administrative district of Gmina Międzyrzecz, within Międzyrzecz County, Lubusz Voivodeship, in western Poland. It lies approximately 10 kilometres (6 mi) west of Międzyrzecz, 34 km (21 mi) south-east of Gorzów Wielkopolski, and 58 km (36 mi) north of Zielona Góra.