| Jurisdiction: | Diocese |
| Nellore | |
| Latin: | Dioecesis Nellorensis |
| Country: | India |
| Province: | Visakhapatnam |
| Rite: | Latin Rite |
| Cathedral: | St Joseph’s Cathedral in Nellore |
| Established: | 3 July 1928 |
| Area Km2: | 30,800 |
| Population: | 6,601,312 |
| Population As Of: | 2004 |
| Catholics: | 79,765 |
| Catholics Percent: | 1.2 |
| Metro Archbishop: | Prakash Mallavarapu |
The Roman Catholic Diocese of Nellore (Latin: Nelloren(sis)) is a diocese located in the city of Nellore in the ecclesiastical province of Visakhapatnam in India.