King Wei of Qi was a ruler of the ancient Chinese state of Qi during the Warring States period. He is known for his efforts to strengthen his state and expand its influence through military campaigns and alliances. His reign is often marked by political intrigue and the challenges of maintaining power amid the conflicts of rival states. Despite his ambitions, King Wei faced significant opposition from other states, particularly Han and Zhao. His leadership style and decisions ultimately led to his downfall, as he was assassinated in 320 BCE. His death marked a significant turning point in the power dynamics of the region.