Marquess of Mos (Spanish: Marqués de Mos) is a hereditary title of Spanish nobility.

[1] It was created on 1 December 1692 by King Charles II of Spain in favor of Gabriel Sarmiento Quiros de Sotomayor.

On 12 November 1789, King Charles IV of Spain granted the accompanying dignity of Grandee to the fourth marquis, Benito Correa y Sotomayor.