Fan Changsheng (died 318) is a Taoist hermit who is instrumental in the establishment of the Cheng Han state during the Sixteen Kingdoms era in China.

He leads a Taoist community of over one thousand families on Mount Qingcheng, Sichuan.

During a critical famine, Fan Changsheng provides Li Xiong's army with food from his community's bounty.

With Fan's help, Li Xiong achieves victory over Luo Shang's army during Li Xiong's siege of Chengdu.