La Rioja is a wine region in the foothills of the Andes Mountains in western Argentina, north of Mendoza and San Juan. The mountainous terroir of the region is particularly suited to the white-grape variety Torrontes, which produces crisp, aromatic white wines.

Locals argue that La Rioja was one of the first Argentinian regions to have vines planted in it, and Spanish settlers in the late 16th Century are widely credited with being the first to plant grapes here. In fact, La Rioja was named for the northern Spanish region of the same name by Juan Ramirez de Velasco, a Spaniard from Rioja itself. This has caused some animosity between the two regions: in 2011, the Argentinian province won a court case allowing it to continue to label its wines as 'La Rioja Argentina'.