| The Marquess of Sierra Bullones | |
| Office: | Prime Minister of Spain |
| President: | Francisco Serrano |
| Term Start: | 26 February 1874[1] |
| Term End: | 29 June 1874[2] |
| Predecessor: | Emilio Castelar |
| Successor: | Práxedes Mateo Sagasta |
| Birth Date: | 27 December 1804 |
| Birth Place: | Lima, Viceroyalty of Peru, Spain |
| Death Date: | 29 December 1879 (aged 75) |
| Death Place: | Madrid, Spain |
| Birthname: | Juan de Zavala y de la Puente |
| Nationality: | Spanish |
| Honorific Prefix: | The Most Excellent |
Juan de Zavala y de la Puente, 1st Marquess of Sierra Bullones (27 December 1804, in Lima, Viceroyalty of Peru[3] – 29 December 1879,[4] in Madrid, Spain) was a Spanish noble and politician. After fighting in the First Carlist War, the Marquess served as Prime Minister of Spain.
He was the son of Pedro José de Zavala y Bravo de Rivero, 7th Marquess of San Lorenzo, and Grimanesa de la Puente y Bravo de Lagunas, marchioness de la Puente.[5]
He married on 1839 María del Pilar de Guzmán, 24ht Duchess of Nájera,[6] and had five children:
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