| Mahinda III | |
| King of Anuradhapura | |
| Reign: | 812 – 816 |
| Predecessor: | Dappula II |
| Successor: | Aggabodhi VIII |
| Dynasty: | House of Lambakanna II |
| Father: | Dappula II |
Mahinda III was King of Anuradhapura in the 9th century, whose reign lasted from 812 to 816. He succeeded his father Dappula II as King of Anuradhapura and was succeeded by his brother Aggabodhi VIII.