Marlborough wine region in the context of "Pinot noir"

Blenheim (/ˈblɛnɪm/ BLEN-im; Māori: Waiharakeke) is the most populous town in the region of Marlborough, in the north east of the South Island of New Zealand. It has an estimated population of 29,800 as of June 2025. The surrounding Marlborough wine region is well known as the centre of the New Zealand wine industry. It enjoys one of New Zealand's sunniest climates, with warm, relatively dry summers and cool, crisp winters.

Blenheim is named after the Battle of Blenheim (1704) in the War of the Spanish Succession, where troops led by John Churchill, 1st Duke of Marlborough defeated a combined French and Bavarian force. The New Zealand Ministry for Culture and Heritage gives a translation of "flax stream" for the town's Māori name, Waiharakeke.

New Zealand wine is produced in several of its distinct winegrowing regions. As an island country in the South Pacific Ocean, New Zealand has a largely maritime climate, although its elongated geography produces considerable regional variation from north to south. Like many other New World wines, New Zealand wine is usually produced and labelled as single varietal wines, or if blended, winemakers list the varietal components on the label. New Zealand is best known for its Marlborough Sauvignon Blanc, and more recently its dense, concentrated Pinot Noir from Marlborough, Martinborough and Central Otago.

While New Zealand wine traces its history to the early 19th century, the modern wine industry in New Zealand began in the mid-20th century and expanded rapidly in the early 21st century, growing by 17% a year from 2000 to 2020. In 2020, New Zealand produced 329 million litres (87,000,000 US gal) from 39,935 hectares (98,680 acres) of vineyard area, of which 25,160 ha (about two-thirds) is dedicated to Sauvignon Blanc. Nearly 90% of total production is exported, chiefly to the United States, Britain and Australia, reaching a record NZ$1.92 billion in export revenue in 2020.

The Wairau River is one of the longest rivers in New Zealand's South Island. It flows for 170 kilometres (110 mi) from the Spenser Mountains (a northern range of the Southern Alps), firstly in a northwards direction and then northeast down a long, straight valley in inland Marlborough.

The river's lower reaches and surrounding fertile plain provide the basis for the Marlborough wine region. The river has its outflow into Cook Strait at Cloudy Bay, just north of Blenheim in the island's northeast. The Wairau River meets the sea at the Wairau Bar, an important archaeological site.