Działyń [ˈd͡ʑawɨɲ] is a village in the administrative district of Gmina Zbójno, within Golub-Dobrzyń County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 8 kilometres (5 mi) west of Zbójno, 10 km (6 mi) south of Golub-Dobrzyń, and 30 km (19 mi) east of Toruń.