| Jurisdiction: | Diocese |
| Juína | |
| Latin: | Dioecesis Iuinensis |
| Local: | Diocese de Juína |
| Country: |  Brazil |
| Province: | Cuiabá |
| Rite: | Latin Rite |
| Established: | 23 December 1997 (years ago) |
| Cathedral: | Cathedral of the Sacred Heart of Jesus in Juína |
| Area Km2: | 129,078 |
| Population: | 140,000 |
| Population As Of: | 2006 |
| Catholics: | 126,593 |
| Catholics Percent: | 90.4 |
| Bishop: | Neri José Tondello |
| Metro Archbishop: | Mílton Antônio dos Santos |
| Map: | ProvinciaEclesiasticaCuiaba.jpg |
The Roman Catholic Diocese of Juína (la|Dioecesis Iuinensis) is a diocese located in the city of Juína in the ecclesiastical province of Cuiabá in Brazil.