Liu Xi (, died 193 BC) was an elder brother of
Emperor Gaozu of Han. He was made Marquess of Hexin after Han Dynasty established. In 201 BC, he was made
Prince of Dai. After defeated by
Xiongnu forces in 200 BC, Xi was demoted to Marquess of Heyang. In 195 BC, his son
Liu Pi was made Prince of Wu. Xi died in 193 BC and was bestowed the posthumous name Qing .