Diego Sarmiento de Acuña, 1st Count of Gondomar, Spanish academic and diplomat (died 1626)

Diego Sarmiento de Acuña, 1st Count of Gondomar, referred to simply as Count Gondomar, was a Spanish nobleman and diplomat. He twice served as Spain's ambassador to England and later held an informal but influential role as Spain's leading expert on English affairs, a position he maintained until his death.