Zhuge Jin (174 – July or August 241), courtesy name Ziyu, was a Chinese military general and politician of the state of Eastern Wu during the Three Kingdoms period of China. Born in the late Eastern Han dynasty, Zhuge Jin started his career in the 200s as an official under the warlord Sun Quan, who later became the founding emperor of Eastern Wu in the Three Kingdoms period. In 215, he served as Sun Quan's representative in a territorial dispute over southern Jing Province between Sun Quan and his ally, Liu Bei. In 219, he joined Sun Quan's general Lü Meng in an invasion of Liu Bei's territories in Jing Province after Sun Quan broke the Sun–Liu alliance. He was subsequently appointed as a general and commandery administrator. Before the Battle of Xiaoting of 221–222, Zhuge Jin attempted to dissuade Liu Bei from going to war with Sun Quan but was unsuccessful. The battle ultimately concluded with victory for Sun Quan's side; both sides made peace later and reestablished an alliance between the Eastern Wu and Shu Han states against their rival state, Cao Wei. From 222 until his death in 241, despite being rather incompetent in military affairs, Zhuge Jin served as one of Eastern Wu's top generals and participated in some battles against Cao Wei forces.