Nam Ja-hyun (Korean: ???; December 7, 1872 – August 22, 1933) was a Korean independence activist.
She participated in the March 1st Movement and defected to Manchuria, joined an independence revolution organization and carried out various independence movements, including an attempt to assassinate Japanese Governor-General of Korea, Makoto Saito.
It was comparable to Ahn Jung-geun who shot Ito Hirobumi.
The Presidential Medal of the Order of National Foundation was posthumously awarded in 1962.
She was a model for Ahn Ok-yoon, a character in the 2015 film Assassination.