Santiago Arata Perrone (born 2 September 1996) is a Uruguayan rugby union player who generally plays as a scrum-half and represents Uruguay internationally. He made his international debut for Uruguay against Canada on 6 February 2016. 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. 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 2020-21 season.