Lu Yanchang (盧延昌) (died 911) was a ruler of the Qian Prefecture (虔州, in modern Ganzhou, Jiangxi) region early in the Chinese Five Dynasties and Ten Kingdoms period.
By 895, Lu Guangchou, who was then an agrarian rebel leader, had taken over Qian Prefecture and taken the title of prefect.
When Lu Guangchou was subsequently repelled in his attack on Chao Prefecture (潮州, in modern Chaozhou, Guangdong) by Liu Yin the acting military governor of Qinghai Circuit (清海, headquartered in modern Guangzhou, Guangdong), Liu attacked Shao Prefecture, but was defeated in an ambush by Lu Guangchou's officer Tan Quanbo, allowing Lu Guangchou to retain Shao.
Lu Yanchang thereafter remained at Qian Prefecture, and his positions were confirmed by the rulers of two states that were rivals to each other but to both of whom Lu Guangchou had nominally submitted — Later Liang's Emperor Taizu, and Wu's Yang Longyan.
Yang Longyan bestowed the title of prefect of Qian on Lu Yanchang, which he accepted, but he submitted a petition through Ma Yin the Prince of Chu — a vassal of Later Liang — stating:[3] I accepted the commission from Huainan [(淮南, i.e., Wu, as Wu's main territory was previously Tang dynasty's Huainan Circuit)] just to stop them from plotting against me.