Svetlana Aleksandrovna Kuznetsova (); born 27 June 1985) is a Russian professional tennis player and as of 11 February 2013 ranked No. 51 in the WTA singles and No. 211 in the doubles ranking. Kuznetsova has appeared in four Grand Slam singles finals, winning two, and has also appeared in seven doubles finals, winning twice. As a doubles player, Kuznetsova has reached the finals of each grand slam at least once, winning the Australian twice. She has qualified five times for the round-robin stage of the WTA Tour Championships but has never qualified for the semifinals.