Mierzejewo [mjɛʐɛˈjɛvɔ] is a village in the administrative district of Gmina Krzemieniewo, within Leszno County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 2 kilometres (1 mi) south of Krzemieniewo, 18 km (11 mi) east of Leszno, and 64 km (40 mi) south of the regional capital Poznań.