Wiardunki [vjarˈdunki] is a village in the administrative district of Gmina Ryczywół, within Oborniki County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Ryczywół, 16 km (10 mi) north of Oborniki, and 43 km (27 mi) north of the regional capital Poznań.