Wanyan Yungong (Chinese: 完顏允恭; 1146－1185), Jurchen name Hutuwa (Chinese: 胡土瓦), was an imperial prince of China's Jurchen-led Jin dynasty. He was the son of the Emperor Shizong an Empress Mingde. He was the father of the Emperor Zhangzong and Emperor Xuanzong.
In May 1162, he became the Crown Prince. In the first month of the eighth year of Emperor Shizong's reign, his title was changed back. In June of the 25th year of Shizong, the prince died of illness in Chenghua Hall. After hearing the news, Shizong was very sad and accorded him the posthumous name Crown Prince Xuanxiao (宣孝太子).
After his eldest son (Emperor Zhangzong) became emperor, he was honored with the temple name Xianzong (顯宗) and the posthumous name Emperor Tidao Hongren Yingwen Ruide Guangxiao (體道弘仁英文睿德光孝皇帝).