Lu Jiajing (Chinese: 逯佳境; pinyin: Lù Jiājìng; Mandarin pronunciation: [lû tɕjá tɕîŋ]; born 18 November 1989) is a Chinese tennis player.

On 18 March 2019, she reached her career-high singles ranking of world No.

Lu has won 18 titles in singles and 28 in doubles on the ITF Circuit.

Partnering Wang Yafan, Lu won her first $50k tournament at Xi'an, defeating Liang Chen and Yang Zhaoxuan in the 2014 final.

She qualified for the newly upgraded WTA 500 2024 Korea Open defeating fourth seed Polina Kudermetova in the qualifying competition.