Zachodzko [zaˈxɔt͡skɔ] is a village in the administrative district of Gmina Miedzichowo, within Nowy Tomyśl County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 16 kilometres (10 mi) north-west of Nowy Tomyśl and 66 km (41 mi) west of the regional capital Poznań.