Su Shuang

Su Shuang was a merchant from Zhongshan during the late Han Dynasty period of Chinese history. Around 180, he and Zhang Shiping went to Zhuo commandery (present day Zhuozhou, Baoding, Hebei) to trade horses. There they saw Liu Bei's potential and decided to supply him with gold and other valuables. With these, Liu could recruit troops for himself.

In Luo Guanzhong's historical novel Romance of the Three Kingdoms, Su and Zhang Shiping supplied Liu Bei, Guan Yu and Zhang Fei with horses, money, and steel for making weapons. Liu's forces were preparing to fight the Yellow Turban rebels at the time.