Liu Ding (Liú Dìng), Prince of Shanyang (Chinese: 山陽王, Shānyángwàng), was a prince of the Han dynasty. He was the fourth son and heir of Liu Wu, Prince of Liang. He did not receive all of his father's inheritance; instead, his uncle the emperor Jing divided the Liang Kingdom into five pieces. Liu Ding ruled Shanyang from 144 to 136 BC.[1] He died without leaving any sons and was given the posthumous name Ai (哀, "lamentable").[2]