Marquess of Oris () is a hereditary title in the Peerage of Spain granted on 1 August 1708 by Charles VI, pretender to the Spanish Crown in favor of Carlos de OrÃÂs y Puiggener. The name makes reference to Oris Castle in the county of Osona, Province de Barcelona, of which the 1st Marquess was the lord of, as a descendant of the second branch of the OrÃÂs line.
It was re-created in 1915 by Alfonso XIII in favor of Carlos de Sentmenat y de Sentmenat, who also held the titles of Marquess of Castelldosrius (which had attached to it a Grandeeship) and Baron of Santa Pau.