Nowy Zieluń [ˈnɔvɨ ˈʑɛluɲ] is a village in the administrative district of Gmina Lidzbark, within Działdowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 7 kilometres (4 mi) south of Lidzbark, 23 km (14 mi) west of Działdowo, and 78 km (48 mi) south-west of the regional capital Olsztyn.