Gnin [ɡnin] is a village in the administrative district of Gmina Rakoniewice, within Grodzisk Wielkopolski County, Greater Poland Voivodeship, in west-central Poland. It lies approximately 8 kilometres (5 mi) north-east of Rakoniewice, 6 km (4 mi) south-west of Grodzisk Wielkopolski, and 47 km (29 mi) south-west of the regional capital Poznań.