Niewodnica [ɲɛvɔˈdɲit͡sa] is a settlement in the administrative district of Gmina Reszel, within Kętrzyn County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 8 kilometres (5 mi) south-east of Reszel, 13 km (8 mi) south-west of Kętrzyn, and 55 km (34 mi) north-east of the regional capital Olsztyn.