Dzierniakowo [d͡ʑɛrɲaˈkɔvɔ] is a village in the administrative district of Gmina Gródek, within Białystok County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 3 kilometres (2 mi) west of Gródek and 31 km (19 mi) east of the regional capital Białystok.