Maradzki Chojniak [maˈrat͡ski ˈxɔi̯ɲak] is a settlement in the administrative district of Gmina Sorkwity, within Mrągowo County, Warmian-Masurian Voivodeship, in northern Poland. It lies approximately 4 kilometres (2 mi) south of Sorkwity, 12 km (7 mi) south-west of Mrągowo, and 43 km (27 mi) east of the regional capital Olsztyn.