Działyń [ˈd͡ʑawɨɲ] is a village in the administrative district of Gmina Olszewo-Borki, within Ostrołęka County, Masovian Voivodeship, in east-central Poland.

[1] It lies approximately 11 kilometres (7 mi) west of Ostrołęka and 99 km (62 mi) north of Warsaw.

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