Patricia Hy-Boulais (born 22 August 1965) is a former tennis player.
She turned professional on October 12, 1986.
Early in her career she represented Hong Kong (since the beginning until the end of the 1987 season).
She became a citizen of Canada in 1991.
However, she represented Canada since the beginning of the 1988 season.
Her best performance at a Grand Slam came when she got to the quarter finals of the 1992 US Open, defeating Eva Ĺ vĂglerová, Judith Wiesner, Jennifer Capriati and Helena Suková before losing to eventual champion Monica Seles.
After Hy-Boulais did it in 1992, Canada did not have another woman to survive into the second week at the French Open until Aleksandra Wozniak did it in 2009.Hy-Boulais represented her new country at the 1996 Summer Olympics in Atlanta, Georgia, where she was eliminated in the second round by the number one seed Monica Seles.
Hy-Boulais reached her highest ranking in the WTA Tour on March 8, 1993, when she became the number 28 of the world.
Hy-Boulais's daughter Isabelle is a top Canadian tennis prospect.