Li Keju (李可舉) (died 885) was a warlord late in the Chinese dynasty Tang Dynasty, who controlled Lulong Circuit (盧龍, headquartered in modern Beijing) from 876 to 885.
It is not known when Li Keju was born. His father Li Maoxun was ethnically Huigu, of the Abusi (阿布思) tribe. In 875, Li Maoxun, then an officer of Lulong Circuit, overthrew then-military governor (Jiedushi) Zhang Gongsu in a mutiny and took over control of the circuit, and was subsequently commissioned by Emperor Xizong to be military governor. In 876, Li Maoxun requested retirement and recommended Li Keju to succeed him. Emperor Xizong permitted Li Maoxun to retire. He made Li Keju acting military governor, and full military governor later in the year.
In 878, when Li Keyong the son of the Shatuo chieftain Li Guochang (who was then the Tang-commissioned military governor of Zhenwu Circuit (振武, headquartered in modern Hohhot, Inner Mongolia) rebelled and seized Datong Circuit (大同, headquartered in modern Datong, Shanxi), and was subsequently joined in rebellion by his father Li Guochang, Li Keju was one of generals whose army that Emperor Xizong ordered to mobilize against Li Guochang and Li Keyong, along with Li Jun (李均) the military governor of Zhaoyi Circuit (昭義, headquartered in modern Changzhi, Shanxi), the Tuyuhun chieftains Helian Duo and Bai Yicheng (白義誠), and Sage (薩葛) chieftain Mi Haiwan (米海萬). When Li Keju subsequently launched his attack against Li Keyong, Li Keyong stationed himself at Xiongwu Base (雄武軍, in modern Chengde, Hebei) to defend against Li Keju, leaving his officer Gao Wenji (高文集) at Shuo Prefecture (朔州, in modern Shuozhou, Shanxi) — but the new Tang-commissioned military governor of Datong, Li Zhuo (李涿), then persuaded Gao to surrender Shuo to him. When Li Keyong subsequently returned to Shuo to try to take it, Li Keju had his officer Han Xuanshao (韓玄紹) intercept Li Keyong, crushing Li Keyong's army and killing some 7,000 soldiers, before again defeating Li Keyong at Xiongwu Base. When Li Guochang was subsequently defeated by Li Zhuo and Helian, Li Guochang and Li Keyong were forced to abandon Datong Circuit and flee to the Dada (達靼) tribes. For his contributions, Li Keju was bestowed the honorary chancellor title of Shizhong (侍中).