Głęboczyzna [ɡwɛmbɔˈt͡ʂɨzna] is a village in the administrative district of Gmina Suchowola, within Sokółka County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 3 kilometres (2 mi) north of Suchowola, 34 km (21 mi) north-west of Sokółka, and 54 km (34 mi) north of the regional capital Białystok.