Zhang Lu, courtesy name Gongqi, posthumously known as Marquis Yuan of Langzhong (閬中原侯), was a Chinese politician, religious leader, and warlord who lived during the late Eastern Han dynasty. He was the third generation Celestial Master, a Taoist religious order. He controlled a state in the Hanzhong region, which he had named Hanning (漢寧) until 215, when he surrendered to Cao Cao, whom he would serve until his death one year later.