(born 20 February 1963) is a former female track and field athlete who competed at two Olympic Games.
Matsui finished second behind Fatima Whitbread in the javelin event at the 1983 WAAA Championships.
At the 1984 Olympic Games in Los Angeles, she represented Japan in the women's javelin throw and four years later at the 1988 Olympic Games in Seoul, she represented the Japanese Olympic team again.