Nam Et-Phou Louey National Park is a protected area in northern Laos, covering 4,107.1 km2 (1,585.8 sq mi) in three provinces: Houaphan, Luang Prabang, and Xieng Khouang. It was designated a national park in 2019, and was previously designated a national protected area. The protected area included a 3,000 km2 (1,200 sq mi) core area where human access and wildlife harvest is prohibited and a 2,950 km2 buffer area where pre-existing villages are allocated land for subsistence living.