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.

Early life

Santilli with neighbours of Buenos Aires

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.

Political career

Santilli with mayor Mauricio Macri

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. 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. 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. 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%.

Congressman

In 2021, he ran for a seat in the Chamber of Deputies in the Juntos por el Cambio list in Buenos Aires Province.

Personal life

He was married to journalist Nancy Pazos, with whom he has three children.

Electoral history

Executive

Electoral history of Diego Santilli
ElectionOfficeListVotesResultRef.
Total%P.
2015 1-RDeputy Chief of Government of Buenos AiresRepublican Proposal832,61945.56%1st→ Round 2
2015 2-RRepublican Proposal861,38051.64%1stElected
2019Juntos por el Cambio1,095,01355.90%1stElected

Legislative

Electoral history of Diego Santilli
ElectionOfficeList#DistrictVotesResultRef.
Total%P.
1999National DeputyJusticialist Party3City of Buenos Aires180,3049.18%3rdNot elected
2003City LegislatorCommitment to Change5City of Buenos Aires179,73010.35%4thElected
2005Republican Proposal Alliance2City of Buenos Aires591,55233.21%1stElected
2013National SenatorPRO Union2City of Buenos Aires722,83139.26%1stElected
2021National DeputyTogether1Buenos Aires Province3,550,32139.77%1stElected
2025La Libertad Avanza1Buenos Aires Province3,605,12741.45%1stElected
  • Público y Efficiente (Public and Efficient) ISBN 950-537-604-9

External links

Political offices
Preceded byLisandro CatalánMinister of the Interior 2025–presentIncumbent