| Kassapa III | |
| King of Anuradhapura | |
| Reign: | 732 – 738 |
| Predecessor: | Aggabodhi V |
| Successor: | Mahinda I |
| Dynasty: | House of Lambakanna II |
| Father: | Manavanna |
Kassapa III was King of Anuradhapura in the 8th century, whose reign lasted from 732 to 738. He succeeded his brother Aggabodhi V as King of Anuradhapura and was succeeded by his younger brother Mahinda I.