| Oba Iyiola Oyewale Matanmi III | |
| Ataoja of Osogbo | |
| Reign: | 27/06/1976-04/07/2010 |
| Birth Date: | 1935 |
| Death Date: | 2010 |
| Burial Date: | Osogbo |
Oba Iyiola Oyewale Matanmi III (1935-2010) was a Nigerian monarch. He was the 20th Ataoja (King) of Osogbo the ancient city of Osogbo the state capital of Osun.[1] [2]
Matanmi was the king of Osogbo from 27 July 1976 to 04 July 2010 from the rulling house Lahanmi/Matanmi lineage and he reigned for 34 years before he died on August 4, 2010.[3]