Słojniki [swɔi̯ˈniki] is a village in the administrative district of Gmina Sokółka, within Sokółka County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 4 kilometres (2 mi) south of Sokółka and 36 km (22 mi) north-east of the regional capital Białystok.