Pelnik [ˈpɛlnik] is a village in the administrative district of Gmina Łukta, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) east of Łukta, 17 km (11 mi) north-east of Ostróda, and 24 km (15 mi) west of the regional capital Olsztyn.