Łoniewo [wɔˈɲɛvɔ] is a village in the administrative district of Gmina Osieczna, within Leszno County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 3 kilometres (2 mi) south of Osieczna, 9 km (6 mi) north-east of Leszno, and 60 km (37 mi) south of the regional capital Poznań.