Radziłów [raˈd͡ʑiwuf] is a village (formerly a town) in Grajewo County, Podlaskie Voivodeship, in north-eastern Poland. It is the seat of the gmina, an administrative district called Gmina Radziłów. It lies approximately 27 kilometres (17 mi) south of Grajewo and 61 km (38 mi) north-west of the regional capital Białystok.