| Baha al-Din Sam III | |
|---|---|
| Sultan of the Ghurid dynasty | |
| Reign | 1212–1213 | 
| Predecessor | Ghiyath al-Din Mahmud | 
| Successor | Ala al-Din Atsiz | 
| Born | Ghor | 
| Died | 1213 | 
| House | Ghurid | 
| Father | Ghiyath al-Din Mahmud | 
| Religion | Sunni Islam | 
Baha al-Din Sam III (Persian: بهاء الدین سام), was Sultan of the Ghurid dynasty from 1212 to 1213. He was the son and successor of Ghiyath al-Din Mahmud.
Baha al-Din Sam III was the son of Ghiyath al-Din Mahmud, who was assassinated in 1212. After Ghiyath's assassination, Baha al-Din Sam III ascended the Ghurid throne. One year later, however, he was carried by the Khwarazmian-Shahs to Khwarezm. He was then succeeded by his relative Ala al-Din Atsiz.