Cisy [ˈt͡ɕisɨ] is a village in the administrative district of Gmina Narew, within Hajnówka County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 7 kilometres (4 mi) north-east of Narew, 26 km (16 mi) north of Hajnówka, and 32 km (20 mi) south-east of the regional capital Białystok.