Ciski [ˈt͡ɕiski] is a village in the administrative district of Gmina Zatory, within Pułtusk County, Masovian Voivodeship, in east-central Poland. It lies approximately 5 kilometres (3 mi) east of Zatory, 16 km (10 mi) south-east of Pułtusk, and 46 km (29 mi) north of Warsaw.