Wang Tanzhi (Chinese: 王坦之; pinyin: Wáng Tǎnzhī; Wade–Giles: Wang-t'an-shih) (330 - 16 June 375[1]), also known by his courtesy name Wéndù (文度), was an official in the Eastern Jin Dynasty, during the 4th century CE. He had served under the general Huan Wen until the latter's death in 373. He, together with Xie An, became the guardian of the young Emperor Xiaowu of Jin, but he died less than three years after Xiaowu became emperor.