Shen Buhai was a Chinese essayist, philosopher, and politician. The Shiji records that he served as Chancellor of the Han state under Marquis Zhao of Han for fifteen years, from 351 BC or 354 to his supposed death in 337 BC. He died of natural causes while in office. A contemporary of syncretist Shi Jiao and "Legalist" Shang Yang, he was born in the State of Zheng, and was likely a minor official there. After Han conquered Zheng in 375 BC, he rose up in the ranks of the Han officialdom, dividing up its territories and successfully reforming it.

Han was an ancient Chinese state during the Warring States period of ancient China. Scholars frequently render the name as Hann to clearly distinguish it from China's later Han dynasty.