Kompocie is a village in the administrative district of Gmina Puńsk, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Lithuania. It lies approximately 6 kilometres (4 mi) east of Puńsk, 16 km (10 mi) north-west of Sejny, and 125 km (78 mi) north of the regional capital Białystok.