Czachy [ˈt͡ʂaxɨ] is a village in the administrative district of Gmina Radziłów, within Grajewo County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 5 kilometres (3 mi) south-east of Radziłów, 30 km (19 mi) south of Grajewo, and 57 km (35 mi) north-west of the regional capital Białystok.