| Jurisdiction: | Diocese |
| Ambatondrazaka | |
| Latin: | Dioecesis Ambatondrazakaënsis |
| Country: |  Madagascar |
| Metropolitan: | Toamasina |
| Rite: | Latin Rite |
| Area Km2: | 21,436 |
| Population: | 1,151,830 |
| Population As Of: | 2006 |
| Catholics: | 220,000 |
| Catholics Percent: | 19.1 |
| Bishop: | Orthasie Marcellin Herivonjilalaina |
| Bishop Title: | Bishop elect |
The Roman Catholic Diocese of Ambatondrazaka (Latin: Ambatondrazakaën(sis)) is a diocese located in the city of Ambatondrazaka, Madagascar, in the ecclesiastical province of the Roman Catholic Archdiocese of Toamasina (in Toamasina, Madagascar).