Haast is a small town in the Westland District territorial authority on the West Coast of New Zealand's South Island. The Haast region covers over 2,500 square kilometres.
The region is named after Julius von Haast, a Prussian-born geologist instrumental in the early geological surveys of New Zealand.
The main economic activities in the Haast region are farming, fishing and tourism.
Lake Moeraki is 30 kilometres to the northeast, and the Haast Pass is 63 kilometres to the southeast by road. State Highway 6 passes through Haast Junction and just to the east of Haast township. The settlement of Okuru is located on the coast 12 kilometres south-west of Haast.
The rarest subspecies of kiwi, the Haast tokoeka, is only found in the mountains of the Haast region.