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.

The Westland temperate forests, also known as the Westland temperate rainforests, is a temperate broadleaf and mixed forests ecoregion located along the central west coast of New Zealand’s South Island, also known as Te Waipounamu. These forests are found in the region of the Westland District, which spans approximately 11,880 square kilometers. It is bounded on the west by the Tasman Sea, and on the east by the Southern Alps. Much of this area is protected by the Westland Tai Poutini National Park.