Igor Tikhomirov () (born 4 May 1963) is a Canadian (formerly Soviet) épée fencer.
He competed for the Soviets at the 1988 Summer Olympics, winning a bronze medal in the épée team competition. During the Soviet part of his career he trained at Dynamo in Moscow.
Tikhomirov won the bronze medal for Canada at the épée 2006 World Fencing Championships after he lost 15-6 to Wang Lei in the semi-final. Same year he won gold for Canada at Pan American Championships. He also represented Canada at 2008 Beijing Olympic Games where he finished 15.
He lives in Toronto where he runs the Sword Players Fencing Academy.