Santiago Arata Perrone (born 2 September 1996) is a Uruguayan rugby union player who plays as a scrum-half for Castres in the French Top 14. He also represents Uruguay internationally.^[1]

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He made his international debut for Uruguay against Canada on 6 February 2016.^[2] He was included in the Uruguayan squad for the 2019 Rugby World Cup which was held in Japan for the first time and also marked his first World Cup appearance.^[3]

On 28 May 2020, Arata signed a major professional contract with French side Castres in the Top 14 competition on a two-year deal from the 2020-24 season.^[4]