Yago De Moura Santiago is a Brazilian International Master (IM) and Grandmaster (GM) of chess. He was born on February 19, 1996 in Fortaleza, Brazil. Santiago achieved his International Master title in December 2013, having gained the necessary norms in national and international tournaments. He received his Grandmaster title in 2016, becoming the 11th Brazilian to do so.
Between 2010 and 2012, Santiago represented Brazil at the World Youth Chess Championship. He also represented Brazil at the Chess Olympiad in Baku, Azerbaijan and Batumi, Georgia in 2016 and 2018 respectively.
Santiago's presence in national championships, the Brazilian Chess Championship, most notably in 2015, where he finished in third place. Santiago won the second division of the Brazilian Team Championship in 2010, and consequently, his club qualified for the first division in the following year.