Sierakowo [ɕɛraˈkɔvɔ] is a village in the administrative district of Gmina Kościan, within Kościan County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 3 kilometres (2 mi) north-west of Kościan and 40 km (25 mi) south-west of the regional capital Poznań.