徐晃
Xu Huang () (died 227), courtesy name Gongming, was a Chinese military general serving under the warlord Cao Cao in the late Eastern Han dynasty of China. He later served in the state of Cao Wei during the Three Kingdoms period under the first two rulers, Cao Pi and Cao Rui, before his death at the start of Cao Rui's reign. Xu Huang is best noted for breaking the siege at the Battle of Fancheng in 219 by routing the enemy commander Guan Yu on the field.