Lucas van Foreest (born 3 March 2001) is a Dutch chess grandmaster.
He won the Dutch Chess Championship in 2019.
Van Foreest earned the International Master title in 2016 and was awarded the Grandmaster title in 2018, at age 17.
He is the No.
1 ranked Dutch under-18 player as of November 2018.
A member of the Van Foreest family, his brother Jorden won the Dutch Chess Championship in 2016, and both his great-great grandfather Arnold and great-great granduncle Dirk were three-time Dutch Champions.