Huan Yanfan (桓彥範) (653–706), courtesy name Shize (士則), formally Prince Zhonglie of Fuyang (扶陽忠烈王), briefly known during the reign of Emperor Zhongzong of Tang as Wei Yanfan (韋彥範), was an official of the Chinese dynasty Tang Dynasty and Wu Zetian's Zhou Dynasty, serving as chancellor during the reign of Emperor Zhongzong. He was a key figure in the coup that overthrew Wu Zetian and restored Emperor Zhongzong in 705, but was later exiled due to false accusations instigated by Wu Zetian's nephew Wu Sansi and killed in exile in a cruel manner.
Read more about Huan Yanfan: Background, During Wu Zetian's Reign, During Emperor Zhongzong's Second Reign