Bangsjøan is a series of lakes that straddle the borders of the municipalities of Snåsa, Grong, Overhalla, and Steinkjer in Nord-Trøndelag county, Norway. The southwestern lake is called Ytter-Bangsjøen, the middle lake is Midter-Bangsjøen, and the northeastern lake is Øyster-Bangsjøen. The lakes lie about 10 kilometres (6.2 mi) north of the lake Snåsavatnet and about 18 kilometres (11 mi) northwest of the village of Snåsa.