周济
Zhou Ji () was a Chinese warlord of the late Tang Dynasty who seized control of Zhongwu Circuit (忠武, headquartered in modern Xuchang, Henan) in 880, briefly submitted to the agrarian rebel Huang Chao's new state of Qi, and later returned the Tang fold, controlling Zhongwu until he was forced to abandon it in 884 due to an attack by Lu Yanhong. Lu might have killed him subsequently.