Empress Zhangsun (長孫皇后, personal name unknown) (601 – 28 July 636), formally Empress Wendeshunsheng (文德順聖皇后, literally "the civil, virtuous, serene, and holy empress") or, in short, Empress Wende (文德皇后), was an empress of the Chinese dynasty Tang Dynasty. She was the wife of Emperor Taizong and the mother of Emperor Gaozong. She was of Xianbei origin and well educated.