Li Zhen (李貞; 627 – October 12, 688), formally Prince Jing of Yue (越敬王), posthumously known during Wu Zetian's reign as Hui Zhen (虺貞), was an imperial prince of the Chinese Tang dynasty who, along with his son Li Chong, rose against Wu Zetian, then empress dowager and regent, as they feared that she was about to slaughter the Tang imperial Li clan. Both he and Li Chong were quickly defeated, however, and he committed suicide.