Anne Viensouk Keothavong (born 16 September 1983) 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 (achieved February 2009). 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 (alongside Elena Baltacha) to Virginia Wade's record for most Fed Cup ties played for the Great Britain with 39. Keothavong announced her retirement on 24 July 2013. After that, she became a member of BT Sport's tennis coverage team, alongside Martina Navratilova and fellow British ex-number one Sam Smith. In 2017, Keothavong became Fed Cup captain for Great Britain, leading the team to win all four ties played in the Europe/Africa Zone Group I. She continued as captain for the 2018 and 2019 Fed Cup, winning promotion in April 2019 to World Group II for the first time in 26 years.