Radziwiłłów [rad͡ʑiˈviu̯wuf] is a village in the administrative district of Gmina Ostrów Wielkopolski, within Ostrów Wielkopolski County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 4 kilometres (2 mi) south of Ostrów Wielkopolski and 103 km (64 mi) south-east of the regional capital Poznań.

The village has an approximate population of 150.