Salvador Casañas y Pagés (5 September 1834[1] – 27 October 1908[1]) was a Spanish cardinal of the Roman Catholic Church.

Casañas was appointed Apostolic Administrator sede plena of Urgell on 18 January 1879 by Pope Leo XIII, and on the following 7 February Titular bishop of Ceramus.

The French Co-Princes of Andorra during his leadership were Jules Grévy, Sadi Carnot, Jean Casimir-Perier, and Félix Faure.

Casañas was made Bishop of Barcelona on 18 April 1901, and later participated in the papal conclave of 1903, which selected Pope Pius X.

On Christmas Day 1905, an anarchist made an unsuccessful attempt to assassinate the Cardinal in the cloister of the Barcelona cathedral.