Mchy [mxɨ] is a village in the administrative district of Gmina Książ Wielkopolski, within Śrem County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 6 kilometres (4 mi) south of Książ Wielkopolski, 17 km (11 mi) south-east of Śrem, and 48 km (30 mi) south-east of the regional capital Poznań.