Bahu District (Persian:باهو), also known as Bahu Kalat district, is a district located at Chabahar County in the southeast of Iran, in Sistan va Baluchistan province. Bahu district includes a large area on the eastern side of Bahu Kalat river, between the Iran-Pakistan border to the east, Gwatar Bay to the southeast and Pishin District to the north. Bahu Kalat is the largest village and centre of Bahu.