Maria Yuryevna Kirilenko (Russian: Мари́я Ю́рьевна Кириле́нко; born in Moscow on 25 January 1987) is a Russian professional tennis player. Kirilenko won her first WTA Tour title in 2005, defeating Anna-Lena Grönefeld in the China Open. Kirilenko reached 18, her career-high singles ranking, on the WTA tour in July 2008. She won the junior event at the 2002 Canadian Open, as well as the 2002 US Open junior tournament. She has reached one Grand Slam quarterfinal at the 2010 Australian Open. As of 29 August 2011, Kirilenko is ranked World No. 29.
She then reached the second rounds of 2010 Hansol Korea Open losing to former world no. 1 Dinara Safina and 2010 Toray Pan Pacific Open to Flavia Pennetta. At the last Premier Mandatory event of the year in the 2010 China Open, she lost in the third round to eventual finalist and compatriot Vera Zvonareva. In the 2010 HP Open she retired in the second round due to a left hip injury against Chang Kai-chen after losing the first set 6–4. Kirilenko reached the final of the 2010 Kremlin Cup, where she fell to Victoria Azarenka.
Kirilenko ended the 2010 season ranked number 20 in the world.
She obtained an invite from Hong Kong Tennis Patrons' Association to play Hong Kong Tennis Classic and won Gold Group Championships with her compatriots Vera Zvonareva and Yevgeny Kafelnikov. At the Australian Open she failed to defend her quarterfinal points by being knocked out in the second round. However, in the doubles competition, she reached the final partnered with Victoria Azarenka but lost to Pennetta and Dulko. The Kirilenko/Azarenka team managed to win the Mutua Madrid Open. At the French Open, she reached the third round in singles and reached the quarterfinals in the doubles event.
Kirilenko successfully defended her points earned from 2010 in the 2011 Wimbledon Championships by reaching the 3rd round, evenutally being stopped by the No. 7 seeded Serena Williams.