| Honorific Prefix: | General |
| Óscar Diego Gestido | |
| Order: | 32nd |
| Office: | President of Uruguay |
| Vicepresident: | Jorge Pacheco Areco |
| Term Start: | 1 March 1967 |
| Term End: | 6 December 1967 |
| Predecessor: |
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| Successor: | Jorge Pacheco Areco |
| Office1: | Member of the National Council of Government |
| Term Start1: | 1 March 1963 |
| Term End1: | 1 March 1967 |
| Birth Date: | 3 November 1901 |
| Birth Place: | Montevideo, Uruguay |
| Death Place: | Montevideo, Uruguay |
| Parents: |
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| Spouse: | Elisa de los Campos |
| Children: | 3 |
| Party: | Colorado Party |
| Education: | University of Montevideo |
| Occupation: | Politician, Military officer |
| Allegiance: |  Uruguay |
| Branch: | Uruguayan Army |
| Serviceyears: | 1920–1967 |
| Rank: | General |
| Commands: | Uruguayan Army (March–December 1967) |
Óscar Diego Gestido Pose (3 November 1901 – 6 December 1967), was a Uruguayan politician and military officer who was the 32nd President of Uruguay from March 1967 until his death in December of the same year.
Diego Gestido was from a military background, and served in the military for 36 years before retiring with the rank of general in 1957. Afterwards he had an important participation during the Uruguayan floods of April 1959, being considered a hero. He was also a member of the Colorado Party.
On 27 November 1966 elections were celebrated, together with a constitutional referendum which gave place to a new Constitution restoring one-person presidency. Diego Gestido was elected President.
Prominent people in his government included Vice President Jorge Pacheco Areco, César Charlone, Luis Hierro Gambardella, Julio Lacarte Muró, Manuel Flores Mora, and Zelmar Michelini, who later co-founded the Frente Amplio grouping.
Diego Gestido died in office. His remains were buried at the Central Cemetery of Montevideo.[1] His death meant that three Uruguayan Presidents had died in office in a 20-year period. He was immediately succeeded by his vice president, Pacheco Areco.
His brother Álvaro Gestido was a notable Uruguayan football player.
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