Wądzyn [ˈvɔnd͡zɨn] is a village in the administrative district of Gmina Bobrowo, within Brodnica County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies approximately 5 kilometres (3 mi) north-west of Bobrowo, 13 km (8 mi) north-west of Brodnica, and 53 km (33 mi) north-east of Toruń.