Du Cong (杜悰) (c. 794?-873?), courtesy name Yongyu (永裕), formally the Duke of Bin (邠公), was an official of the Tang dynasty of China, serving two terms as chancellor during the reigns of Emperor Wuzong and Emperor Wuzong's cousin Emperor Yizong. He was traditionally considered a skilled politician who maintained his high position throughout his lengthy career, but not a capable chancellor.