Rioja is a wine region in Spain. Rioja wine is made from grapes grown in the autonomous communities of La Rioja and Navarre, and the Basque province of Álava. Rioja is further subdivided into three zones: Rioja Alta, Rioja Baja and Rioja Alavesa. Many wines have traditionally blended fruit from all three regions, though there is a slow growth in single-zone wines.

Rioja red wines are classified into four categories. The first, simply labeled Rioja, is the youngest, spending less than a year in an oak aging barrel. A crianza is wine aged for at least two years, at least one of which was in oak. Rioja Reserva is aged for at least three years, of which at least one year is in oak. Finally, Rioja Gran Reserva wines have been aged at least two years in oak and three years in bottle.

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