Li Quanzhong (Chinese: 李全忠) (d. 886) was a warlord late in the Chinese Tang dynasty, who controlled Lulong Circuit (盧龍, headquartered in modern Beijing) from 885, when he overthrew the prior military governor (jiedushi) Li Keju, to his death in 886.
During Emperor Xizong's Guangming era (880–881), he served as the military advisor to the prefect of Di Prefecture (棣州, in modern Binzhou, Shandong).
[1] In spring 885, Li Keju and his ally Wang Rong the military governor of Chengde Circuit (成德, headquartered in modern Shijiazhuang, Hebei), were apprehensive that Wang Chucun the military governor of Yiwu Circuit (義武, headquartered in modern Baoding, Hebei), was allied with the powerful warlord Li Keyong the military governor of Hedong Circuit (河東, headquartered in modern Taiyuan, Shanxi), as they feared that Li Keyong would eventually have designs on their territory.
They therefore entered into a pact to jointly attack Yiwu (which lay between Lulong and Chengde), conquer it, and divide its territory.
[2] In spring 886, Emperor Xizong officially commissioned Li Quanzhong as the military governor of Lulong.