Wełna [ˈvɛu̯na] is a village in the administrative district of Gmina Rogoźno, within Oborniki County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 7 kilometres (4 mi) south-west of Rogoźno, 11 km (7 mi) north-east of Oborniki, and 37 km (23 mi) north of the regional capital Poznań.