Ilona Kalyuvna Korstin (Russian: Илона Кальювна Корстин; born 30 May 1980), alternatively spelled Korstine, is a retired Russian basketball forward of Estonian origin, who competed for her native Russia at the 2004 Summer Olympics, the 2008 Summer Olympics, and the 2012 Summer Olympics, winning two bronze medals. She ended her career in 2013.
She is CEO at the VTB United League
Olympics Bronze Medal (2): 2004, 2008
World Championship Silver Medal (2): 2002, 2006
EuroBasket (3): 2003, 2007, 2011
Ligue Féminine (2): 1999, 2000
Russian Premier League (3): 2004, 2005, 2006
Russian Cup (4): 2004, 2006, 2007, 2008
World League (4): 2003, 2004, 2005, 2007
Europe SuperCup (2): 2009, 2010
Honored Master of Sports of Russia
Medal of the Order For Merit to the Fatherland, 1st class (2 August 2009) - for outstanding contribution to the development of physical culture and sports, high achievements in sports at the Games of the XXIX Olympiad in Beijing in 2008