Guo Jingjing (Chinese: 郭晶晶; pinyin: Guō Jīngjīng; born October 15, 1981 in Baoding, Hebei) is a female diver from the People's Republic of China. She has won more Olympic gold medals than any other female diver.

Guo took up diving when she was six years old at the Baoding Training Base. She started training in competitive diving in 1988, and was selected to dive for the Chinese national team in 1992. Guo first competed at the Olympics in 1996. Her coach leading up to the 2008 Olympics was Zhong Shaozhen.

During the 2004 Summer Olympics Guo earned a gold medal in the 3 meter women's synchronized springboard along with Wu Minxia, before winning her first individual Olympic gold in the 3 meter women's springboard.