Deniski [dɛˈɲiskʲi] is a village in the administrative district of Gmina Bielsk Podlaski, within Bielsk County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 13 kilometres (8 mi) north of Bielsk Podlaski and 26 km (16 mi) south of the regional capital Białystok.