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Rubén Giustiniani
National Senator
In office 10 December 2003 – 10 December 2015
Constituency	Santa Fe Province
Personal details
Born	(1955-11-03) November 3, 1955 (age 70) Rosario, Santa Fe
Party	Socialist Party
Alma mater	National University of Rosario
Profession	Civil engineer

Rubén Héctor Giustiniani (born November 3, 1955, in Rosario) is an Argentine politician from the Socialist Party (PS), who was National Senator representing Santa Fe Province from 2003 to 2015. An engineer by occupation, he also served as president of the Socialist Party.^[1]

Giustiniani was a National Deputy from 1997 to 2003, when he was elected senator for the minority. He was the first Socialist to become a member of the upper house of Congress since Alfredo Palacios (in 1960).^[2] In 2007, he was a candidate for the vice-presidency of Argentina, accompanying Elisa Carrió, in the general election held on 28 October 2007, in which he and Carrió gained second place.