Bonthe is a coastal town located on Sherbro Island in Bonthe District in the southern Province of Sierra Leone. The town lies on the eastern shore of Sherbro Island, on the Sherbro River estuary. Bonthe is about 60 miles south-west of Bo and 187 miles south-east of Freetown.Bonthe is by far the smallest of Sierra Leone's six municipalities and is directly governed by a city council, headed by a mayor.