The Battle of Jiulianshan was an unsuccessful counter-guerrilla operation launched by the nationalists against the communists during the Chinese Civil War in the post-World War II era in the border region of Guangdong, Jiangxi and Hunan.

Jiulianshan was a communist guerrilla base in the border region of Guangdong, Jiangxi and Hunan. In November 1948, the nationalist forces from Guangdong consisted of the 13th Security Regiment, the 5th Regiment, and a battalion of the 1st Security Regiment were dispatched to eradicate the local communist guerrilla. The nationalists enjoyed both the technical and numerical superiorities, so they decided to attack on multiple fronts in separate directions. In contrast, the communist guerrilla decided to concentrate their force to achieve numerical superiority in one front against the attacking nationalists, and then fight the enemy at the next front using the same tactic to overcome their own disadvantage.