In July, Jung made her first appearance at the World Archery Championships held in Turin. She suffered two surprise defeats during the competition, with elimination from the women's individual event in the quarter-finals by Georgia's Kristine Esebua being followed by a semi-final defeat in the women's team tournament against India. Jung and teammates Ki Bo-bae and Han Gyeong-hee recovered to achieve a bronze medal in the third-place match. Jung rounded out the year with two gold medals in October's London Archery Classic, the practice event held at Lord's Cricket Ground to prepare for the 2012 Summer Olympics, with Jung winning in both the women's individual and team competitions. Her performances saw her rise to the top of the World Archery Rankings following the conclusion of the London Archery Classic, ending the year as the women's recurve number one.