Lady Xu (died in or after May 229) was a concubine of Sun Quan, the founding emperor of the state of Eastern Wu during the Three Kingdoms period of China.
^According to Lady Xu's biography in Records of the Three Kingdoms, when Sun Quan crowned himself as emperor and Sun Deng was made his crown prince, officials petitioned Sun Quan to make Lady Xu empress. This event took place in May 229; it was also recorded in the same biography that Lady Xu died soon after Sun Quan's refusal.[...登为太子,群臣请立夫人为后] Sanguozhi, vol. 50