Zhang Nan (Chinese: 張南; died 222 A.D.), courtesy name Wenjin (文進), was a military officer of the state of Shu Han in the Three Kingdoms period of China.

Zhang Nan was originally from Jing Province (covering present-day Hubei and Hunan).

He served as a military officer under Liu Bei, the founding emperor of the state of Shu Han in the Three Kingdoms era, and accompanied him to Yi Province (covering present-day Sichuan and Chongqing) in the early 210s.

[1] In 221, Liu Bei attacked his former ally, Sun Quan (the founding emperor of Eastern Wu), after the latter broke their alliance and seized his territories in Jing Province and executed his general Guan Yu.

In the summer of 222, Sun Quan's forces, led by Lu Xun, suddenly launched a counter-attack after about six months of stalemate since the beginning of 222.