220–264) was a military officer of the state of Cao Wei during the Three Kingdoms period of China.
Tian Xu was from Wuzhong County (無終縣), Youbeiping Commandery (右北平郡), which is in present-day Jizhou District, Tianjin.
Later that year, after the Shu emperor Liu Shan had surrendered and Shu had been vanquished by Wei, Zhong Hui planned to rebel against the Cao Wei state.
Zhong Hui staged a revolt in 264 but it was crushed and he lost his life.
Deng Ai's subordinates wanted to bring their superior back from Luoyang.