The 2011 WTA Tour Championships was a tennis tournament played at Istanbul, Turkey from October 25 to October 30, 2011. It was the first time Turkey hosted the WTA Tour Championships. It was the 41st edition of the singles event and the 36th edition of the doubles competition. The tournament was held at the Sinan Erdem Dome and was contested by eight singles players and four doubles teams. It was the larger of two season ending championships on the 2011 WTA Tour.

Victoria Fiodaraŭna Azarenka is a Belarusian professional tennis player. Azarenka is a former world No. 1 in singles, having claimed the top ranking for the first time on 30 January 2012. She was the year-end No. 1 in 2012 and has held the top ranking for a combined total of 51 weeks.