Empress Dou (竇皇后, personal name unknown) (died 97), formally Empress Zhangde (章德皇后, literally "the polite and virtuous empress"), was an empress of the Chinese Han dynasty. Her husband was Emperor Zhang. She was already influential during her husband's reign, but became particularly powerful as empress dowager regent for her adoptive son Emperor He after Emperor Zhang's death. Her family members, particularly her brother Dou Xian, became extremely powerful, until they were toppled in a coup d'etat by Emperor He, in 92. Empress Dou lost her power, but remained honored until her death.