Mościska [mɔɕˈt͡ɕiska] is a village in the administrative district of Gmina Michałowo, within Białystok County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 3 kilometres (2 mi) west of Michałowo and 29 km (18 mi) east of the regional capital Białystok.