Diego Fernández de la Cueva, 1st Viscount of Huelma (died 26 November 1473) was a Spanish nobleman.
Diego Fernández de la Cueva was born in Úbeda, Andalusia, Crown of Castille.
He was a merchant and banker of King Henry IV of Castile, who granted him the title of 1st Viscount of Huelma.
He was related to or perhaps a descendant of Juan Sánchez de la Cueva, a nobleman from Úbeda, Regedor or Veinte y Quatro (24) of Úbeda in 1367, who rose pennant for the usurper Henry, Count of Trastamara, bribed by his generous promises.
Summarized and Translated from "Don Beltrán de la Cueva" https://web.archive.org/web/20070320120801/http://www.castillosdejirm.com/beltrancueva.htm