Jelena Dokic (Serbian: Jelena Dokić, Јелена Докић; pronounced ; born 12 April 1983) is a Serbian-Australian tennis coach, commentator, writer and former player. Her highest ranking was world No. 4 in August 2002. She won WTA tour events on all surfaces during her career: hard, clay, grass and carpet.
In the 1999 Wimbledon Championships the 16-year-old Dokic achieved one of the biggest upsets in tennis history, beating Martina Hingis 6-2, 6-0. This remains the only time the women's world No. 1 has ever lost to a qualifier at Wimbledon. Dokic would go on to reach the quarterfinals of that competition, only her second Grand Slam.
Dokic rapidly ascended through the world rankings after her Wimbledon breakthrough, but her time in the world elite was beset by off-court struggles. Her relationship with her outspoken father and coach Damir, on whose advice she switched allegiance to the Federal Republic of Yugoslavia in 2000, was the subject of much media speculation. She switched back to Australia in 2005, and would later accuse her father of physical and mental abuse in her 2017 autobiography.