Shiyamalen "Shiyam" Thavandiran (born 25 May 1992) is a chess International Master from Canada.
In 2005, Thavandiran became the youngest winner of the Canadian Junior Chess Championship in history, the record he holds as of February 2018.
By the age of 20, he won 12 national chess competitions and represented Canada several times at the World Youth Chess Championship and World Junior Chess Championship.