| Jurisdiction: | Diocese |
| Itabira–Fabriciano | |
| Latin: | Dioecesis Itabirensis–Fabriciannensis |
| Country: |  Brazil |
| Coordinates: | -19.6186°N -43.2267°W |
| Province: | Mariana |
| Rite: | Latin Rite |
| Established: | 14 June 1965 (years ago) |
| Cathedral: | Catedral Nossa Senhora do Rosário, Itabira |
| Cocathedral: | Co-Catedral São Sebastião, Coronel Fabriciano |
| Area Km2: | 8,724 |
| Population: | 728,917 |
| Population As Of: | 2004 |
| Catholics: | 496,798 |
| Catholics Percent: | 68.2 |
| Metro Archbishop: | Geraldo Lyrio Rocha |
| Bishop: | Marco Aurélio Gubiotti |
| Emeritus Bishops: | Odilon Guimarães Moreira |
The Roman Catholic Diocese of Itabira–Fabriciano (Latin: Dioecesis Itabirensis-Fabriciannensis) is a diocese located in the cities of Itabira and Coronel Fabriciano in the ecclesiastical province of Mariana in Brazil.[1]