Rubcowo is a village in the administrative district of Gmina Płaska, within Augustów County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 17 km south-east of Płaska, 32 km east of Augustów, and 80 km north of the regional capital Białystok. During the German occupation of Poland (World War II), on 24 November 1939, four Polish foresters from Rubcowo were murdered by the Germans in the prison in Suwałki as part of the Intelligenzaktion.