Martín Lousteau is an Argentine economist and politician from the Unión Cívica Radical. He is a National Senator for the City of Buenos Aires.
He served as Minister of Economy of Argentina during the presidency of Cristina Fernández de Kirchner, from December 10, 2007, to April 24, 2008. At age 37, Lousteau was the youngest person to hold that position in over five decades.
Lousteau served as Argentina’s Ambassador to the United States from 2015 to 2017.
From 2013 to 2019, he was a National Deputy representing the City of Buenos Aires.
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Martín Lousteau campaigning in Buenos Aires during his 2015 mayoral run.
After his dismissal, Lousteau contributed a weekly opinion column to the conservative newspaper La Nación and published two bestselling books on economic theory and history: Economía 3-D (2011) and Otra vuelta a la economía (2012). He received a Yale World Fellowship in 2012. Lousteau joined the UNEN coalition, led by the centrist UCR, and was nominated on its party list for Buenos Aires City in the 2013 midterm elections. He was one of five UNEN candidates elected to Congress from Buenos Aires City; however, ongoing differences with caucus leader Elisa Carrió led Lousteau to form his own faction (Suma + UNEN), which attracted UNEN congress members who trusted in UCR grassroots action.
He ran for mayor in 2015 backed by the center-left coalition ECO (Energía Ciudadana Organizada), and was narrowly defeated by Horacio Rodríguez Larreta. He was appointed ambassador to the United States by President Mauricio Macri in 2016, but resigned the following year to run for national deputy in the 2017 Argentine midterm elections. In those elections, Lousteau ran at the head of the Coalición Evolución, which included the Unión Cívica Radical and the Socialist Party. Despite finishing third with 12.3% of the vote, he and Carla Carrizo were elected national deputies due to Argentina’s proportional representation electoral system.