Zaręby is a village in the administrative district of Gmina Dziadkowice, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 3 km north-west of Dziadkowice, 16 km north of Siemiatycze, and 64 km south of the regional capital Białystok. According to the 1921 census, the village was inhabited by 176 people, among whom 172 were Roman Catholic, 1 Orthodox and 3 Mosaic. At the same time, 175 inhabitants declared Polish nationality and 1 Belarusian. There were 34 residential buildings in the village.