Sun Ben (fl. 190s–200s), courtesy name Boyang, was a cousin of Sun Quan, a Chinese warlord who lived during the late Eastern Han dynasty and later became the founding emperor of the state of Eastern Wu in the Three Kingdoms period. He was the eldest son of Sun Qiang, the elder brother of Sun Quan's father Sun Jian. He first served Sun Jian in the campaign against Dong Zhuo. After Sun Jian's death, he took control of the army and went to serve Yuan Shu. He would soon rejoin Sun Ce (Sun Jian's eldest son and successor). He died of illness after the Battle of Red Cliffs. He was succeeded by his son Sun Lin (孫鄰).