| Diego Elizondo | |
| Birth Date: | 1779 3, df=y |
| Birth Place: | Quillota, Captaincy General of Chile, Spanish Empire |
| Death Place: | Valparaíso, Chile |
| Office1: | President of the Senate of the Republic of Chile |
| Term Start1: | 1826 |
| Term End1: | 1826 |
| Term Start2: | 1836 |
| Term End2: | 1837 |
| Party: | Conservative Party (1823–1852) |
| Occupation: | Politician |
| Profession: | Bishop |
| Spouse: | None |
| Children: | None |
Diego Antonio de Elizondo Prado (born 5 March 1779 – 5 October 1852) was a Chilean bishop and politician who served as President of the Senate of Chile.