| Jurisdiction: | Diocese |
| Tambacounda | |
| Latin: | Dioecesis Tambacundanus |
| Country: | Senegal |
| Metropolitan: | Dakar |
| Rite: | Latin Rite |
| Area Km2: | 59,602 |
| Population: | 409,000 |
| Population As Of: | 2004 |
| Catholics: | 7,500 |
| Catholics Percent: | 1.8 |
| Bishop: | Paul Abel Mamba Diatta |
| Emeritus Bishops: | Jean-Noël Diouf |
The Roman Catholic Diocese of Tambacounda (Latin: Tambacundan(us), French: Diocèse catholique romain de Tambacounda) is a diocese located in the city of Tambacounda in the ecclesiastical province of Dakar in Senegal.