Jaspar Yu Woon Chai (born November 14, 1988) is a Bruneian badminton player. He achieved a career high ranking of 199 in the men's singles discipline. It was announced in May 2016 that he was awarded the tripartite commission to compete in the men's singles event at the 2016 Summer Olympics in Rio de Janeiro, Brazil. Yu was the first badminton athlete from Brunei to compete at the Olympics.