Xu Shang (Chinese: 徐商; pinyin: Xú Shāng), courtesy name Yisheng (義聲) or Qiuqing (秋卿), formally Viscount of Dongguan (東莞子), was an official of the Chinese Tang dynasty, serving as a chancellor during the reign of Emperor Yizong of Tang.
His father Xu Zai (徐宰) served as a judge at the supreme court (大理寺, Dali Si).
He was then made the military governor (jiedushi) of Hezhong Circuit (河中, headquartered in modern Yuncheng, Shanxi).
[3] Early in the Xiantong era (860–874) of Emperor Xuānzong's son Emperor Yizong, Xu Shang was recalled to the capital Chang'an to serve as the minister of justice (刑部尚書, Xingbu Shangshu) and the director of the salt and iron monopolies; he was also created the Viscount of Dongguan[1] In 865, by which time he was apparently serving as chief imperial censor (御史大夫), he was made the deputy minister of justice (刑部侍郎, Xingbu Shilang) and given the designation Tong Zhongshu Menxia Pingzhangshi (同中書門下平章事), making him a chancellor de facto.
[4] In 869, he was sent out of Chang'an to serve as the military governor of Jingnan Circuit (荊南, headquartered in modern Jingzhou, Hubei), continuing to carry the Tong Zhongshu Menxia Pingzhangshi as an honorary title.