| Jurisdiction: | Diocese |
| Ambato | |
| Latin: | Dioecesis Ambatensis |
| Country: |  Ecuador |
| Province: | Province of Quito |
| Area Km2: | 3,844 |
| Population: | 486,193 |
| Population As Of: | 2006 |
| Catholics: | 425,310 |
| Catholics Percent: | 87.5 |
| Parishes: | 48 |
| Denomination: | Roman Catholic |
| Rite: | Latin Rite |
| Established: | 28 February 1948 (years ago) |
| Bishop: | Jorge Giovanny Pazmiño Abril, O.P. |
| Emeritus Bishops: | Germán Trajano Pavón Puente |
| Map: | Ecuador - Diocesi di Ambato.jpg |
| Website: | diocesisambato.org |
The Roman Catholic Diocese of Ambato (la|Dioecesis Ambatensis) is a diocese located in the city of Ambato in the ecclesiastical province of Quito in Ecuador.