| Ramón Castro Jijón | |
| Office: | Acting President of Ecuador |
| Term Start: | 11 July 1963 |
| Term End: | 29 March 1966 |
| Predecessor: | Carlos Julio Arosemena Monroy |
| Successor: | Telmo Vargas |
| Birth Date: | 15 November 1915 |
| Birth Place: | Esmeraldas, Ecuador |
| Death Place: | Quito, Ecuador |
| Rank: | Commander |
Admiral Ramón Castro Jijón (15 November 1915 - 1 November 1984) was President of Ecuador 11 July 1963 to 29 March 1966. He was appointed commander of the Ecuadorian Navy by Carlos Julio Arosemena Monroy, whom he later overthrew in a coup. For his entire term as President he was chairman of a military junta.