South Forest is a rural locality in the local government area (LGA) of Circular Head in the North-west and west LGA region of Tasmania.

The locality is about 15 kilometres (9.3 mi) east of the town of Smithton.

The 2016 census recorded a population of 101 for the state suburb of South Forest.

[2] Black River forms much of the eastern boundary.

[3] Route C219 (Mengha Road) runs through from north to south.