Sima Zhao, courtesy name Zishang, was a Chinese military general, politician, and regent of the state of Cao Wei during the Three Kingdoms period of China and Emperor of Jin dynasty

Wei (220–266), known as Cao Wei (曹魏) or Former Wei in historiography, was a dynastic state of China and one of the three major states that competed for supremacy over China in the Three Kingdoms period. With its capital initially located at Xuchang, and thereafter Luoyang, the state was established by Cao Pi in 220, based upon the foundations laid by his father, Cao Cao, towards the end of the Eastern Han dynasty.