The Four Lords of the Warring States were four powerful aristocrats of the late Warring States period of Chinese history who exerted a strong influence on the politics of their respective states in the third century BCE.
During this time, the Zhou king was a mere figurehead, and seven states led by aristocratic families competed for real power. Although they were not themselves monarchs, four aristocrats stood out because of their tremendous military power and wealth: Lord Mengchang (d. 279 BCE) of Qi, Lord Pingyuan (d. 251 BCE) of Zhao, Lord Xinling (d. 243 BCE) of Wei and Lord Chunshen (d. 238 BCE) of Chu.