Turośń Kościelna [ˈturɔɕɲ kɔɕˈt͡ɕɛlna] is a village in Białystok County, Podlaskie Voivodeship, in north-eastern Poland. It is the seat of the gmina (administrative district) called Gmina Turośń Kościelna. It lies approximately 13 km (8 mi) south-west of the regional capital Białystok.