Pedro de Alcántara Téllez-Girón y Beaufort Spontin, 11th Duke of Osuna, GE (10 September 1810 – 29 September 1844), was a Spanish peer, head of the House of Osuna.

He was one of the most important peers of his time, and was thirteen times a duke, twelve a marquess, thirteen a count and once a viscount.

[1] Pedro was the son of Francisco Téllez-Girón, 10th Duke de Osuna and of María Francisca Beaufort Spontin y Álvarez de Toledo, 11th Marchioness of Almenara.

Pedro inherited the Dukedom of Osuna after the death of his father in 1820.

As a result, all of his titles, including the Dukedoms of the Infantado and of Osuna would pass on to his brother, Mariano Téllez-Girón.