Syski [ˈsɨski] is a village in the administrative district of Gmina Mniszków, within Opoczno County, Łódź Voivodeship, in central Poland. It lies approximately 4 kilometres (2 mi) north-east of Mniszków, 16 km (10 mi) west of Opoczno, and 60 km (37 mi) south-east of the regional capital Łódź.