Nicolás de Carvajal y Lancaster, Marquis of Sarria (28 October 1696, in Cáceres – 4 March 1770, in Madrid) was a member of the Spanish nobility and military figure in the 18th century.
His mother was a descendant of Jorge de Lancastre, a natural son of King John II of Portugal.
In 1762 he became commander of the Spanish invasion of Portugal, but he was very slow in assembling his troops and commencing the hostilities.
This gave the British the time to bring over an expeditionary force in support of the weak Portuguese army.
Sarria received the order of the Golden Fleece, as compensation, and as a reward for his earlier services to the Crown.