Zameczek [zaˈmɛt͡ʂɛk] (German: Schlößchen) is a village in the administrative district of Gmina Ruciane-Nida, within Pisz County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) north-west of Ruciane-Nida, 23 km (14 mi) west of Pisz, and 66 km (41 mi) east of the regional capital Olsztyn.