Mycielin [mɨˈt͡ɕɛlin] (German: Mietzelchen) is a village in the administrative district of Gmina Dźwierzuty, within Szczytno County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 5 kilometres (3 mi) north-west of Dźwierzuty, 21 km (13 mi) north of Szczytno, and 26 km (16 mi) east of the regional capital Olsztyn.