Ilia Iljiushenok (born 1993) is a Russian chess grandmaster.
He has represented his country in the 2010 Chess Olympiad, and played in the Chess World Cup 2015, being defeated by Dmitry Jakovenko in the first round.
Luke McShane wrote in the January 2024 issue of The Spectator, "IljiushenokâÂÂs brilliancy reminded me of a famous combination, played by a young Botvinnik, almost two decades before he became world champion in 1948."