Lu Yanwei (盧彥威) was a warlord late in the Chinese Tang dynasty, who controlled Yichang Circuit (義昌, headquartered in modern Cangzhou, Hebei) from 885 to 898, most of that time as its military governor (jiedushi).
The first reference to him in the Zizhi Tongjian was in 885, when a mutiny at Yichang's capital Cang Prefecture (滄州) led to the expulsion of the previously military governor Yang Quanmei (楊全玫), who fled to neighboring Lulong Circuit (盧龍, headquartered in modern Beijing).
In 890, by which time Emperor Xizong's brother Emperor Zhaozong was emperor and was launching a general campaign against the major warlord Li Keyong the military governor of Hedong Circuit (河東, headquartered in modern Taiyuan, Shanxi), Lu's neighbors Wang Rong the military governor of Chengde Circuit (成德, headquartered in modern Shijiazhuang, Hebei) and Luo Hongxin the military governor of Weibo Circuit (魏博, headquartered in modern Handan, Hebei) petitioned the imperial government on his behalf again.
As of 898, he was locked in a dispute over the salt trade with Lulong's then-military governor Liu Rengong (whom Li Keyong installed).
When Luo Hongxin refused to receive him, he further fled to Xuanwu Circuit (宣武, headquartered in modern Kaifeng, Henan).