Chai Rong (Chinese: 柴榮) (27 October 921 – 27 July 959), later known as Guo Rong (郭榮), also known by his temple name as the Emperor Shizong of Later Zhou, was the second emperor of the Later Zhou dynasty of China, during the Five Dynasties and Ten Kingdoms period. He reigned from 954 until his death in 959. He succeeded his uncle-in-law Guo Wei, whose surname he had adopted.