Mieleszki [mjɛˈlɛʂki] 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 5 kilometres (3 mi) south-east of Gródek and 37 km (23 mi) east of the regional capital Białystok.