Osowiec [ɔˈsɔvjɛt͡s] is a village in the administrative district of Gmina Orchowo, within Słupca County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Orchowo, 24 km (15 mi) north-east of Słupca, and 78 km (48 mi) east of the regional capital Poznań.