Marquess of Marismas del Guadalquivir (Spanish: Marqués de las Marismas del Guadalquivir) is a hereditary title in the Peerage of Spain, granted in 1829 by Ferdinand VII to Alejandro María Aguado, an important merchant banker.

[2][3] At the death with not descendants of the 4th Marquess in 1894, the title became extinct until it was rehabilitated by Alfonso XIII in 1919 on behalf of María de la Concepción Kirkpatrick, a direct descendant of the 1st Marquess' grandmother.

The title derives its territorial designation from the Guadalquivir Marshes between the provinces of Huelva, Seville and Cádiz.

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