Sima Gui (simplified Chinese: 司马珪; traditional Chinese: 司馬珪; 235 - 11 March 274), courtesy name Zizhang (子璋),[4] posthumously known as Prince Yuan of Gaoyang, was an imperial prince of the Western Jin dynasty.
During the Cao Wei era, Sima Gui was appointed Marquis of Gaoyang Village.
After Sima Zhao reinstated the "five-rank peerage" system in 264, his title became Viscount of Zhenyang.
[8] On 10 April 271,[9] Emperor Wu appointed Wang Ye and Sima Gui as the Left and Right Supervisors of the Masters of Writing respectively.
[11] Sima Gui died without issue in March 274, just less than two years after his father's death in April 272.