Sima Bao
| Sima Bao 司馬保 | |
|---|---|
| Sima Bao's territory as of 317 AD | |
| Prince of Jin (晉王) | |
| Reign | 319 – c.July 320 | 
| Chancellor of State (相國) | |
| In office 315 – 319 | |
| Monarch | Emperor Min of Jin | 
| Personal details | |
| Born | 294 | 
| Died | c.July 320 | 
| Parent | 
 | 
| Courtesy name | Jingdu (景度) | 
| Peerage | Prince of Nanyang (南陽王) | 
| Posthumous name | Prince Yuan (元王) | 
Sima Bao (司馬保; 294 – c.July 320), courtesy name Jingdu (景度), posthumous name Prince Yuan (元王), was a Western Jin imperial prince who briefly contended for the position of emperor after Emperor Min was captured by Han-Zhao forces.