Tian Yue (田悅) (751 – March 26, 784), formally the Prince of Jiyang (濟陽王), was a general of the Chinese dynasty Tang Dynasty who, from 782 to 784, claimed the title of Prince of Wei independent from the Tang regime. Prior to that, he had already been ruling Weibo Circuit (魏博, headquartered in modern Handan, Hebei) in de facto independence from the Tang imperial government as its military governor (Jiedushi), having succeeded his uncle Tian Chengsi in 779. In 784, his cousin Tian Xu — a son of Tian Chengsi's — assassinated him and succeeded him shortly after he had nominally resubmitted to Tang imperial authority.
Tian Yue was born in 751, during the reign of Emperor Xuanzong. His father died early, and his mother remarried a soldier from Pinglu Circuit (平盧, then headquartered in modern Chaoyang, Liaoning). Subsequently, as the army that his stepfather belonged to abandoned the lands of Pinglu Circuit during the Anshi Rebellion and retreated south to Ziqing Circuit (淄青, headquartered in modern Weifang, Shandong, later renamed Pinglu as a result of this retreat), it was said that Tian Yue, accompanying his mother, moved between different places within Ziqing. In 763, his uncle Tian Chengsi, then the military governor (Jiedushi) of Weibo Circuit and ruling Weibo de facto dependently from the Tang imperial regime in the aftermaths of the Anshi Rebellion, sent people to look for him and found him. Tian Chengsi's emissaries brought Tian Yue back to Weibo. When Tian Yue met Tian Chengsi, he properly bowed down to his uncle, causing Tian Chengsi to be amazed and impressed. Tian Chengsi thus entrusted him with command of forces, and it was said that his opinions often matched Tian Chengsi's. After he was grown, it was said that he acted righteously and did not care about wealth, spending it in helping his soldiers, and thus drew their support. Tian Chengsi also favored his talent. Despite the fact that Tian Chengsi had 11 sons, he thus entrusted the most important affairs to Tian Yue, and had his sons assist Tian Yue.