Kruszewnia [kruˈʂɛvɲa] (German: Ludendorff) is a village in the administrative district of Gmina Swarzędz, within Poznań County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 6 kilometres (4 mi) south-east of Swarzędz and 13 km (8 mi) east of the regional capital Poznań.
The village has a population of 151. It was the birthplace of the German general Erich Ludendorff and had his name from 1939 to 1945.