The King River is a river located in the western region of Tasmania, Australia. It flows through the rugged terrain of the Tasmanian Wilderness World Heritage Area and is known for its stunning natural beauty. The river is approximately 40 kilometers long and is a tributary of the Macquarie Harbour, which is an important estuarine system. The King River is notable for its rich history, particularly during the gold rush era in the 19th century. It was a significant site for mining activities, attracting many prospectors seeking gold. Today, the river is popular for recreational activities such as fishing, kayaking, and hiking along its scenic banks.