Don Pedro Caro y Salas, 4th Marquis of La Romana, Grandee of Spain (20 June 1805 – 8 December 1855) was a Spanish aristocrat.

He was the son of General Pedro Caro Sureda, 3rd Marquis of La Romana (1761–1811) and Dionisia de Salas y Boixadors.

[4] In 1811, at the age of five, he was orphaned by his father, inheriting his titles, among which was that of Marquis of La Romana, with a second-class Grandee of Spain.

Caro, however, did not take the oath of office as he supported the Carlist pretender to the Spanish throne, Infante Carlos María Isidro, which led to his exile along with other members of the high nobility of the time.

[11] Through his youngest son Carlos, he was a grandfather of María del Carmen Caro y Caro (1856–1907), who married Carlos Ruspoli, 3rd Duke of Alcudia and Sueca (son of Adolfo Ruspoli, 2nd Duke of Alcudia, and Rosalia Álvarez de Toledo y Silva-Bazán).