Dzwonek [ˈd͡zvɔnɛk] is a village in the administrative district of Gmina Czerwin, within Ostrołęka County, Masovian Voivodeship, in east-central Poland. It lies approximately 4 kilometres (2 mi) north-west of Czerwin, 16 km (10 mi) south-east of Ostrołęka, and 96 km (60 mi) north-east of Warsaw.