The Nass Ranges are a mountain range north of the Skeena River, west of Hazelton, and northeast of Terrace, British Columbia, Canada. It is a subrange of the Hazelton Mountains, which in turn form part of the Interior Mountains.
The Nass Ranges contain an active volcano called Tseax Cone; its volcanic gases are said to have killed of 2,000 Nisga'a people in an 18th-century eruption.
Landforms within the Nass Ranges include: