Diego Santilli
Argentine accountant and politician
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Diego César Santilli (born 6 April 1967) is an Argentine accountant and politician. A member of the political coalition La Libertad Avanza, Santilli has served in a number of posts in the Buenos Aires city government, most notably as Deputy Deputy Chief of Government (deputy mayor) under Horacio Rodríguez Larreta from 2015 to 2021.
Diego Santilli | |
|---|---|
Official portrait, 2025 | |
| Minister of the Interior | |
| Assumed office 10 November 2025 | |
| President | Javier Milei |
| Preceded by | Lisandro Catalán |
| National Deputy | |
| In office 10 December 2021 – 10 November 2025 | |
| Constituency | Buenos Aires |
| In office 9 October 2002 – 10 December 2003 | |
| Constituency | City of Buenos Aires |
| Deputy Chief of Government of Buenos Aires | |
| In office 9 December 2015 – 22 July 2021 | |
| Mayor | Horacio Rodríguez Larreta |
| Preceded by | María Eugenia Vidal |
| Succeeded by | Clara Muzzio (2023) |
| Minister of Justice and Security of the City of Buenos Aires | |
| In office 26 November 2018 – 22 July 2021 | |
| Mayor | Horacio Rodríguez Larreta |
| Preceded by | Martín Ocampo |
| National Senator | |
| In office 10 December 2013 – 10 December 2015 | |
| Constituency | City of Buenos Aires |
| Minister for the Environment and Public Areas of the City of Buenos Aires | |
| In office 10 December 2009 – 9 December 2013 | |
| Mayor | Mauricio Macri |
| Preceded by | Juan Pablo Piccardo |
| Succeeded by | Edgardo Cenzón |
| Legislator of the City of Buenos Aires | |
| In office 10 December 2003 – 10 December 2009 | |
| Personal details | |
| Born | 6 April 1967 Buenos Aires, Argentina |
| Party | Republican Proposal[1] |
| Profession | Accountant |
| Website | Official Blog |
Early life
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Diego César Santilli was born in the neighborhood of Palermo, Buenos Aires on April 6, 1967, within a family of Italian origin. He is son of the former president of River Plate and Banco Nación, Hugo Santilli. His mother María Luisa Forchieri, is a tarotologist.
He attended Saint Augustine School and received his degree in accountancy at the age of 23 from the Faculty of Economic Sciences at the University of Buenos Aires; he also pursued marketing studies at the University of California, Berkeley.[2]
Political career
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Diego Santilli has held several public offices in Buenos Aires City, the most important being manager of the Buenos Aires City Bank and vice president of the City Legislature, elected in 2003. From 2009 to 2013 he served as Minister of Environment and Public Spaces of the City of Buenos Aires.[3][4][5] He is coordinator of Asociación Buenos Aires en RED and, together with his wife, founder of CANI (Food Culture for an Intelligent, Responsible and Safe Nutrition). In 2008 he wrote a children's book in order to raise awareness about the importance of following traffic norms.
In 2013, he was elected National Senator for the City of Buenos Aires; he was second in Republican Proposal's list, under Gabriela Michetti.[6][7] Both Michetti and Santilli went on to leave the Senate to assume office in executive branches before the end of their term.
Deputy Chief of Government
In 2015, shortly after taking office as Senator, he resigned from this position after Horacio Rodríguez Larreta publicly asked him to be his running mate in that year's mayoral election. In the first round, the Larreta-Santilli PRO ticket achieved a lead of approximately 20 percentage points over their rival, Martín Lousteau of the ECO coalition. As no ticket surpassed the 50% threshold, a runoff was held on 19 July. The PRO ticket won by a narrow margin, with 51.64% of the vote against Lousteau's 48.36%, electing Rodríguez Larreta and Santilli as Chief and Deputy Chief of Government, respectively.
In June 2019, Rodríguez Larreta announced that they would run together again for re-election. This decision meant Santilli would be ineligible to run for the top office in the 2023 election, as he would be seeking a second term as vice mayor.[8] He ultimately confirmed his candidacy. In October 2019, the Larreta-Santilli ticket was victorious in the first round, avoiding a runoff by securing 55.9% of the vote. Their main opponent, Matías Lammens of the Frente de Todos, obtained 35%.[9]
Congressman
In 2021, he ran for a seat in the Chamber of Deputies in the Juntos por el Cambio list in Buenos Aires Province.[10][11]
Personal life
He was married to journalist Nancy Pazos, with whom he has three children.[2]
Electoral history
Executive
| Election | Office | List | Votes | Result | Ref. | |||
|---|---|---|---|---|---|---|---|---|
| Total | % | P. | ||||||
| 2015 1-R | Deputy Chief of Government of Buenos Aires | Republican Proposal | 832,619 | 45.56% | 1st | → Round 2 | [12] | |
| 2015 2-R | Republican Proposal | 861,380 | 51.64% | 1st | Elected | |||
| 2019 | Juntos por el Cambio | 1,095,013 | 55.90% | 1st | Elected | [13] | ||
Legislative
| Election | Office | List | # | District | Votes | Result | Ref. | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Total | % | P. | ||||||||
| 1999 | National Deputy | Justicialist Party | 3 | City of Buenos Aires | 180,304 | 9.18% | 3rd[a] | Not elected[b] | [15] | |
| 2003 | City Legislator | Commitment to Change | 5 | City of Buenos Aires | 179,730 | 10.35% | 4th[a] | Elected | [16][17] | |
| 2005 | Republican Proposal Alliance | 2 | City of Buenos Aires | 591,552 | 33.21% | 1st[a] | Elected | [18] | ||
| 2013 | National Senator | PRO Union | 2 | City of Buenos Aires | 722,831 | 39.26% | 1st[a] | Elected | [19] | |
| 2021 | National Deputy | Together | 1 | Buenos Aires Province | 3,550,321 | 39.77% | 1st[a] | Elected | [20] | |
| 2025 | La Libertad Avanza | 1[c] | Buenos Aires Province | 3,605,127 | 41.45% | 1st[a] | Elected | [22] | ||
- Presented on an electoral list. The data shown represents the share of the vote the entire party/alliance received in that constituency.
- Assumed the first place in the list following the resignation of José Luis Espert.[21]