Ludwinowo [ludviˈnɔvɔ] is a village in the administrative district of Gmina Narewka, within Hajnówka County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Belarus. It lies approximately 10 kilometres (6 mi) north of Narewka, 25 km (16 mi) north-east of Hajnówka, and 46 km (29 mi) south-east of the regional capital Białystok.