Dureza is a dark-skinned French wine grape variety from the Ardèche department of south central France in the Auvergne-Rhône-Alpes region.

However, since the variety's relationship to Syrah was revealed, interest in Dureza has been increasing: Pascal Jamet has introduced plantings of the grape to the Saint-Joseph AOC in the northern Rhône Valley, for wine to be made under the appellation of Collines Rhodaniennes vin de pays.

[2] In 1998, DNA typing conducted at both the University of California-Davis and at the Institut National de la Recherche Agronomique in Montpellier established that Dureza was the father of the Syrah grape, with Mondeuse Blanche the mother.

[2] In the 20th century, ampelographers Louis Levadoux and (decades later) Linda Bisson categorized Dureza as a member of the Pelorsien eco-geogroup along with Bia blanc, Béclan, Durif, Exbrayat, Jacquère, Joubertin, Mondeuse blanche, Peloursin, Servanin and Verdesse.

Both synonyms, which are now more closely related to Dureza's similarly late-ripening offspring Syrah, are connected to the root of the Latin term serus, "late".