Ksenia Valentinovna Lykina (; born 19 June 1990) is a Russian former tennis player. Her highest WTA singles ranking is No. 171, which she reached in April 2010. Her career-high in doubles is 108, which she achieved in February 2017. She is an Australian Open girls' doubles champion (2008), and a finalist of US Open girls' doubles (2007).
Her best ITF junior ranking was No. 4 in the world.