Lipnik [ˈlipnik] is a settlement in the administrative district of Gmina Ruciane-Nida, within Pisz County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 12 kilometres (7 mi) north-east of Ruciane-Nida, 14 km (9 mi) north-west of Pisz, and 78 km (48 mi) east of the regional capital Olsztyn.