|Birthdate:||February 28, 1985|
|Birthplace:||Belgrade, SR Serbia, Socialist Federal Republic of Yugoslavia|
Jelena Janković (Serbian Cyrillic: Јелена Јанковић, pronounced [jɛ̌lɛna jǎːnkɔv̞itɕ], born 28 February 1985) is a Serbian professional tennis player. Janković is a former World No. 1 in singles, a ranking achieved in the months following her finals appearance at the 2008 US Open. Janković's career highlights include winning the 2007 Wimbledon Mixed Doubles title with Jamie Murray, the 2010 BNP Paribas Open, the Internazionali BNL d'Italia twice, in 2007 and 2008, and the aforementioned appearance in the finals of the 2008 US Open. She is coached by her brother Marko.