Obrubniki [ɔbrubˈniki] is a village in the administrative district of Gmina Dobrzyniewo Duże, within Białystok County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 4 kilometres (2 mi) north of Dobrzyniewo Duże and 17 km (11 mi) north-west of the regional capital Białystok.