Li Guangbi (李光弼) (708 – August 15, 764), formally Prince Wumu of Linhuai (臨淮武穆王), was a general of the Chinese dynasty Tang Dynasty, of ethnic Khitan ancestry, who was instrumental in Tang's suppression of the Anshi Rebellion.

Li Guangbi was born in 708, during the second reign of Emperor Zhongzong. HIs father, Li Kailuo (李楷洛), was a general of Khitan ancestry, whose achievements during the Kaiyuan era (713-741) of Emperor Zhongzong's nephew Emperor Xuanzong eventually led to his creation as the Duke of Ji Commandery. Li Guangbi's mother was Lady Li.

Li Guangbi was said to be careful in his behavior when young. He was capable in horsemanship and archery, and also studied the Book of Han. He started his army service when young, and was said to be decisive, strict, and full of strategies. After his father died, he inherited the title of the Duke of Ji, and was praised for not entering his wife's room (i.e., abstaining from sexual relations) during the observation of the mourning period.