Hoang Lien National Park (Vietnamese: Vườn quốc gia Hoàng Liên, also known as Hoàng Liên Sơn, Dãy Hoàng Liên) is a national park within Hoang Lien Son Range, in the districts of Sa Pa and Than Uyên of Lào Cai Province, and part of Phong Thổ District in Lai Châu Province in Northern Vietnam.

[3] The core part of Hoang Lien National Park is within San Sa Ho, Lao Chai, Ta Van, Ban Ho populated places, Sa Pa district, Lao Cai Province, and a part of Muong Khoa, Than Thuoc communes, Than Uyen district.

The total peripheral area, the Hoang Lien Son-Van Ban section, is 38,724 hectares (149.51 sq mi),[5] consisting of Sa Pa town and a few communes within Sa Pa and Van Ban districts, Lao Cai Province; and 2 communes within Phong Tho district, Lai Chau.

[2] Hoang Lien National Park is home to numerous species of plants and animals, many of which are rare and endangered.

Fansipan is the type locality for the snake Protobothrops cornutus and about one-third of amphibian species present in Vietnam can be found in the park.