Shen Buhai (Chinese: 申不害; c. 400 BC – c. 337 BC) was a Chinese statesman, reformer and diplomat. According to the Shiji, Shen Buhai served as Chancellor of the Han state under Marquis Zhao of Han, for around fifteen years to his natural death in office in 337 BC, ordering its government and doctrines emphasizing Shu 术 (administrative) technique, though the likely late term is Han Fei's. A contemporary of syncretist Shi Jiao and Shang Yang, Shen was born in the central State of Zheng, likely serving as a minor official there. After Han completed the conquest and division of Zheng and Wei in 376 BC, he rose up in the ranks of the Han officialdom, reforming its administration, military defenses, and to a lesser extent law only about a half century after its founding.
Influencing the Han Feizi, Shen Buhai seemed to play an influence on Han dynasty reformers, and likely even the establishment of the civil service examination. With the imperial examination extending in influence to the European civil service, Shen Buhai could perhaps be considered a founder in world bureaucracy, and even the first political scientist. However, it is not as evident that he was as well known as another of the Han Feizi's figures, Shen Dao, during their lifetimes. His administrative ideas were influential enough to become one of the Xun Kuang's critiqued "Twelve Masters" in the later Warring States period, and might have been renowned by the time the Han Feizi was written.