Namosi is one of Fiji's fourteen provinces and one of eight based in Viti Levu, the largest island.

Located to the west of Suva, the province covers 570 square kilometers.

[3] The province is governed by a Provincial Council, chaired by Ratu Kiniviliame Taukeinikoro.

A major fault line runs through Viti Levu.

Part of this fault line runs between the Navua and Waidina rivers, which were once a single river but now are separate due to ancient seismo-tectonic events.