Liu Jishu (劉季述) (died January 24, 901) was a eunuch late in the Chinese dynasty Tang Dynasty who, as a powerful commander of the Shence Armies, briefly deposed Emperor Zhaozong in 900 and replaced Emperor Zhaozong with Emperor Zhaozong's son Li Yu, but was soon killed in a countercoup, allowing Emperor Zhaozong to return to the throne.
It is not known when or where Liu Jishu was born. It was said that he was not a prominent eunuch early in his career, but was gradually promoted during the reigns of Emperor Xizong and Emperor Xizong's brother and successor Emperor Zhaozong, eventually becoming one of the directors of palace communications (Shumishi) and then one of the commanders (中尉) of the Shence Armies. However, the main sources on his rise — the New Book of Tang and the Zizhi Tongjian — disagree with each other (and somewhat internally) as to his career progression and actions. The Zizhi Tongjian referred to Liu Jishu as the of the Right Shence Army in 888, at the time of Emperor Xizong's death and Emperor Zhaozong's ascension to the throne (which was supported by Yang Fuguang), but then referred to him as acting director of palace communications in 897, further stating that he cooperated with the warlord Han Jian the military governor of Zhenguo Circuit (鎮國, headquartered in modern Weinan, Shaanxi) when Emperor Zhaozong was at Zhenguo's capital Hua Prefecture (華州) when Han, over Emperor Zhaozong's protest, killed 11 imperial princes whom Emperor Zhaozong had put in command of some of the imperial forces. Emperor Zhaozong was then at Hua Prefecture after fleeing the imperial capital Chang'an with his court after coming under attack by the warlord Li Maozhen the military governor of Fengxiang Circuit (鳳翔, headquartered in modern Baoji, Shaanxi). According to the New Book of Tang, however, it appeared that Liu was director of palace communications when Emperor Zhaozong, at the instigation of the chancellor Cui Yin, killed the commanders of the Shence Armies Zhu Daobi (朱道弼) and Jing Wuxiu (景務脩) in 900 and replaced them with Liu and Wang Zhongxian (王仲先) — whereas the Zizhi Tongjian referred to Zhu and Jing, at their deaths, as directors of palace communications. Regardless, it appeared that by late 900, when Emperor Zhaozong had returned to Chang'an after making peace with Li Maozhen, Liu and Wang were the commanders of the Shence Armies and in enmity with Cui over Cui's role in instigating Zhu's and Jing's deaths.