Qin Lang (fl.199 – 238), courtesy name Yuanming, was a military general of the state of Cao Wei during the Three Kingdoms period of China.
Qin Lang was born in the late Eastern Han dynasty and his ancestral home was in Xinxing Commandery (新興郡; around present-day Xinzhou, Shanxi).
Qin Lang never advised Cao Rui against his ways, nor did he recommend any talents to the Wei imperial court, but he was still nonetheless deeply favoured by the emperor, who often consulted him and called him by his childhood name "Ah-su" (阿穌).
Other officials were aware that Qin Lang was not much of a capable and talented person, but they knew that he was close to the emperor Cao Rui, so they often bribed him and attempted to curry favour with him.
He served as an Academician (博士) in the Imperial University (太學) during the reign of Emperor Wu of the Jin dynasty after the end of the Three Kingdoms period.