Święcienin (Polish pronunciation: [ɕfjɛɲˈt͡ɕɛɲin]) is a village in the administrative district of Gmina Radziłów, within Grajewo County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 6 kilometres (4 mi) north-east of Radziłów, 23 km (14 mi) south of Grajewo, and 60 km (37 mi) north-west of the regional capital Białystok.