Mary Pierce (born January 15, 1975) is a French-American retired tennis professional who played on the Women’s Tennis Association (WTA) tour.
Although born in Canada, she is a citizen of France, Canada, and the United States and played for France in team competitions and the Olympics.
Pierce won four Grand Slam titles, two in singles and two in doubles. She reached six Grand Slam singles finals, most recently at the US Open and French Open in 2005. Her Grand Slam singles titles came at the 1995 Australian Open and the 2000 French Open; Pierce is the last French player, male or female, to win the latter title. She won the 2005 Wimbledon mixed doubles championship and reached three Grand Slam doubles finals. She won 18 WTA singles titles and 10 WTA doubles titles, including five Tier I singles events. She also twice reached the final of the season-ending WTA Tour Championships, most recently in 2005.