| Antonio de Quintanilla | |
| Order: | Royal Governor of Chiloé |
| Term Start: | 1820 |
| Term End: | 1826 |
| Predecessor: | Ignacio María Justiz y Urrutia |
| Birth Date: | 1787 |
| Birth Place: | Pámanes, Spain |
| Death Date: | 1863 |
| Death Place: | Almería, Spain |
| Allegiance: |  Spain |
| Rank: | Brigadier |
| Battles: | |
Antonio Quintanilla (Pámanes, Spain; 1787 - † Almería, Spain; 1863) was a Spanish brigadier and Governor of Chiloé from 1820 to 1826. He was the last royalist to hold the position.[1]
Quintanilla was the son of Francisco de Quintanilla and Teresa Herrera y Santiago, who were members of distinguished families in the Spanish region of Pámanes.[2] He was born November 14, 1787.
He married Antonia Álvarez de Garay, the daughter of Captain Francisco alvarez and Bartola Garay.[3]
As a governor of Chiloé, Quintanilla ordered in 1824 the construction of Fuerte Real de San Carlos.[4] He is also noted for defeating General Ramón Freire's first attempt to liberate Chiloé in 1825 after he dissolved the Chilean congress by force.[5] By January 1826, Quintanilla finally surrendered and became the last Spanish official to withdraw from Chile. He came back to Spain and served as a brigadier of the Santander barracks then the deputy general of La Mancha police.
Quintanilla was the father of Antonio de Quintanilla Alvarez, a Spanish official given the Carlist title of Marquis de Quintanilla.[6]