Sima Yuanxian (司馬元顯), courtesy name Langjun (郎君), formally Heir Apparent Zhong of Kuaiji (會稽忠世子), was briefly a regent of the Eastern Jin, during the reign of his developmentally-disabled cousin Emperor An.
- Occupation
- military leader
- Citizenship
- China
- Born
- 382
- Died
- 402
