Lüeyang County is a county of Hanzhong in the southwest of Shaanxi province, China. It borders Gansu province to the north and west and lies on the upper reaches of the Jialing River. It was first founded in 111 BC.
The county seat has been affected by natural disasters in recent decades. As a result of the 2008 Sichuan earthquake, 95% of buildings in the county seat were damaged. In August 2020, the county seat was flooded by the Jialing River.