Emperor Lizong of Song (26 January 1205 - 16 November 1264), personal name Zhao Yun, was the 14th emperor of the Song dynasty of China and the fifth emperor of the Southern Song dynasty. He reigned from 1224 to 1264.

His original name was Zhao Yuju but later changed his name to Zhao Guicheng and then finally changed his name to Zhao Yun being elevated to an imperial son. Although he was