Mountain River is a rural locality in the local government area (LGA) of Huon Valley in the South-east LGA region of Tasmania. The locality is about 15 kilometres (9.3 mi) north-east of the town of Huonville. The 2016 census recorded a population of 559 for the state suburb of Mountain River. The locality increasingly is a lifestyle destination, being only about 30 minutes south of the Tasmanian capital Hobart by road.