Sypin [ˈsɨpin] is a village in the administrative district of Gmina Piątek, within Łęczyca County, Łódź Voivodeship, in central Poland. It lies approximately 7 kilometres (4 mi) south of Piątek, 18 km (11 mi) east of Łęczyca, and 26 km (16 mi) north of the regional capital Łódź.