Sierszew [ˈɕɛrʂɛf] is a village in the administrative district of Gmina Żerków, within Jarocin County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 13 kilometres (8 mi) south-east of Żerków, 14 km (9 mi) east of Jarocin, and 71 km (44 mi) south-east of the regional capital Poznań.