Liu Rengui (劉仁軌) (602 – March 2, 685[1]), courtesy name Zhengze (正則), formally Duke Wenxian of Lecheng (樂城文獻公), was a Chinese military general and politician during the Tang dynasty, serving as chancellor during the reign of Emperor Gaozong that was dominated by Empress Wu, and the subsequent regency of Empress Dowager Wu over his sons Emperor Zhongzong and Emperor Ruizong. He was known for his military prowess, particularly displayed in the conquest of Baekje, as well as political skills that allowed him to maintain good relationships with colleagues and the strong-willed Empress Wu.