The West Coast is a region of New Zealand on the west coast of the South Island. It is administered by the West Coast Regional Council, and is known co-officially as Te Tai Poutini. It comprises the territorial authorities of Buller District, Grey District and Westland District. The principal towns are Westport, Greymouth and Hokitika. The region, one of the more remote areas of the country, is also the most sparsely populated. With a population of just 32,900 people, the West Coast is the least populous region in New Zealand. The population in the region grew by 0.4% over the year to July 2023.

Westland District is a territorial authority district on the West Coast of New Zealand's South Island. It is administered by the Westland District Council. The district's population is 8,940.