Tang Mei 唐昧 (d. 301 BCE), also written Tang Mie 唐蔑, was a general of the state of Chu 楚 during the Warring States period 戰國 (5th cent.-221 BCE). His family name is derived from the statelet of Tang 唐.
In 301, the three states of Qi 齊, Han 韓, and Wei 魏 formed an alliance (meng 盟) to attack the northern wall of Chu at Fangcheng 方城 (today in Henan), and Tang Mei was given the command over the defence troops. For six months, his army held the territory at River Bi 沘水 (today called River Tang 唐河). The invaders, commanded by Kuang Zhang 匡章 of Qi, Gongsun Xi 公孫喜 of Wei, and Bao Yuan 暴鳶 of Han, finally opted for a surprise attack during the night and defeated the army of Chu at Chuisha 垂沙 (Biyang 泌陽, Henan). Tang Mei was killed during the battle, and the invaders occupied the towns of Wan 宛 (Nanyang 南陽, Henan), and Ye 葉 (Yexian 葉縣, Henan).