| Jurisdiction: | Diocese |
| Ciudad Altamirano | |
| Latin: | Dioecesis Civitatis Altamirensis |
| Local: | Diócesis de Ciudad Altamirano |
| Country: |  Mexico |
| Metropolitan: | Ciudad Altamirano, Guerrero |
| Province: | Province of Acapulco |
| Area Sqmi: | 6,180 |
| Population: | 913,000 |
| Population As Of: | 2006 |
| Catholics: | 885,000 |
| Catholics Percent: | 96.9 |
| Parishes: | 28 |
| Denomination: | Roman Catholic |
| Rite: | Roman Rite |
| Established: | 27 October 1964 (years ago) |
| Cathedral: | Cathedral of St. John the Baptist |
| Bishop: | Joel Ocampo Gorostieta |
| Metro Archbishop: | Leopoldo González González |
| Map: | Roman Catholic Diocese of Ciudad Altamariano in Mexico.jpg |
The Roman Catholic Diocese of Ciudad Altamirano (Latin: Dioecesis Civitatis Altamirensis) is a suffragan diocese of the Archdiocese of Acapulco, in Mexico.