Liu Zhen (劉稹; died September 27, 844[1][2]) was a Chinese rebel during the Tang dynasty. He was an adopted son (biological nephew) of the Tang dynasty general Liu Congjian. After his adoptive father's death, Liu Zhen tried to take over Zhaoyi Circuit (昭義, headquartered in modern Changzhi, Shanxi), which Liu Congjian had governed as military governor (jiedushi), without approval from Emperor Wuzong. When Emperor Wuzong declared a general campaign against him, he was defeated, and he was subsequently killed, along with his clan members, by his own officer Guo Yi (郭誼).