Which region of Argentina is recognized as having the world's highest vineyard area?

The region of Argentina recognized as having the world's highest vineyard area is Mendoza Province. This province is renowned for its favorable climate, diverse elevations, and a variety of terroirs that make it ideal for viticulture. Mendoza is home to the majority of the country's wine production, contributing a significant percentage of the total vineyard area in Argentina, with large numbers of hectares dedicated to both quality varietals and larger production wines.

While Cafayate, Salta, and San Juan all have noteworthy vineyard areas and produce distinct wines, none match Mendoza's overall vineyard size and contribution to the national wine industry. Cafayate is known for its high-altitude vineyards and excellent Torrontés, Salta features some of the highest vineyards in the world and unique terroirs, and San Juan is known for its warmer climate conducive to varietals like Syrah and Bonarda, yet they individually do not surpass the extensive vineyards of Mendoza.