| Jurisdiction: | Diocese |
| Barra do Garças | |
| Latin: | Dioecesis Barragartiensis |
| Local: | Diocese de Barra do Garças |
| Country: |  Brazil |
| Province: | Cuiabá |
| Metropolitan: | Cuiabá |
| Rite: | Latin Rite |
| Established: | 27 February 1982 (years ago) |
| Cathedral: | Cathedral of Our Lady of Guidance in Barra do Garças |
| Area Km2: | 59,840 |
| Population: | 204,000 |
| Population As Of: | 2004 |
| Catholics: | 159,500 |
| Catholics Percent: | 78.2 |
| Bishop: | Paulo Renato Fernandes Gonçalves de Campos |
| Metro Archbishop: | Mário Antônio da Silva |
| Emeritus Bishops: | Protógenes José Luft |
| Map: | ProvinciaEclesiasticaCuiaba.jpg |
| Website: | Website of the Diocese |
The Roman Catholic Diocese of Barra do Garças (la|Dioecesis Barragartiensis) is a diocese located in the city of Barra do Garças in the ecclesiastical province of Cuiabá in Brazil.