Robaczyn [rɔˈbat͡ʂɨn] is a village in the administrative district of Gmina Śmigiel, within Kościan County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 5 kilometres (3 mi) south-east of Śmigiel, 13 km (8 mi) south-west of Kościan, and 53 km (33 mi) south-west of the regional capital Poznań.