Siółko [ˈɕuu̯kɔ] is a village in the administrative district of Gmina Lipsk, within Augustów County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 9 kilometres (6 mi) east of Lipsk, 40 km (25 mi) east of Augustów, and 73 km (45 mi) north of the regional capital Białystok.