Osiny [ɔˈɕinɨ] is a village in the administrative district of Gmina Zagórów, within Słupca County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Zagórów, 20 km (12 mi) south of Słupca, and 76 km (47 mi) south-east of the regional capital Poznań.