Anne Viensouk Keothavong is a British former tennis player. In her career, she won a total of 28 titles on the ITF Women's Circuit, and reached a career-high singles ranking of world No. 48. She also reached the semifinals of six WTA International tournaments, and the semifinals of one Premier tournament. Keothavong was British No. 1 and in 2009 became the first British player to make the WTA top 50 since 1993. In April 2001, aged 17, she became, until Katie Swan in 2016, the youngest player ever to play in the Fed Cup for the British team, and she is second to Virginia Wade's record for most Fed Cup ties played for the Great Britain with 39.