Samantha "Sam" Jane Stosur (born 30 March 1984) is a professional tennis player.
She is aformer World No. 1 in doubles, a ranking which she held for 61 weeks.
Stosur is also a former World No. 4 in singles.
Stosur won the 2011 U.S. Open.
Stosur has won six Grand Slam titles to date; two in women's doubles; and three in mixed doubles.
