Pan Jun (died 239), courtesy name Chengming, was a minister and military general of the state of Eastern Wu during the Three Kingdoms period of China. Originally a minor official serving under the warlords Liu Biao and later Liu Bei in Jing Province, Pan Jun reluctantly switched allegiance to another warlord Sun Quan after Sun Quan seized control of Liu Bei's territories in Jing Province in 220. While serving under Sun Quan, Pan Jun held military commands and quelled a rebellion. After Sun Quan became emperor in 229, he appointed Pan Jun as Minister Steward and later Minister of Ceremonies. During this time, Pan Jun joined the general Lü Dai in suppressing a rebellion by indigenous tribes in his native Wuling Commandery (around present-day Changde, Hunan). He also oversaw civil and militar