Liu Jian (simplified Chinese: 刘健; traditional Chinese: 劉健; pinyin: Liú Jiàn; 11 November, 1969; Jiangsu) is a Chinese animator and film director based in Nanjing.

Having originally studied painting at Nanjing University of the Arts, he began making animations in 1995. In 2007 he founded Le-joy Animation Studio. His first full-length animation Piercing I premiered at the Holland Animation Film Festival. His second feature-length film Have a Nice Day premiered in competition at the 2017 Berlin International Film Festival and won Best Animation Feature at the 54th Golden Horse Awards.