Benjamín de Arriba y Castro (8 April 1886 – 8 March 1973) was a Catholic cardinal and archbishop.

Arriba was ordained to the priesthood by Cardinal Rafael Merry del Val on 14 July 1912 and then taught at the Madrid seminary until 1921.

After becoming a canon of the cathedral chapter of Madrid on 17 February 1921, he served as secretary of the chamber and government of the same diocese from 1921 to 1930.

He received his episcopal consecration on the following 16 June from Bishop Leopoldo Eijo y Garay, with Archbishop Prudencio Melo y Alcalde and Bishop Manuel González y García serving as co-consecrators.

Arriba was later named Bishop of Oviedo on 8 August 1944 and Archbishop of Tarragona on 22 January 1949.