| Jurisdiction: | Diocese |
| Rarotonga | |
| Latin: | Dioecesis Rarotongana |
| Country: | Cook Islands, Niue |
| Metropolitan: | Roman Catholic Archdiocese of Suva |
| Area Km2: | 234 |
| Population: | 11,885 |
| Population As Of: | 2017 |
| Catholics: | 2,255 |
| Catholics Percent: | 19.0 |
| Parishes: | 15 |
| Denomination: | Roman Catholic |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | 21 June 1966 |
| Cathedral: | Saint Joseph's Cathedral |
| Patron: | Saint Joseph |
| Priests: | 9 |
| Bishop: | Reynaldo Bunyi Getalado |
| Suffragan: | for one--> |
| Archdeacon: | for one--> |
| Emeritus Bishops: | Paul Patrick Donoghue |
The Roman Catholic Diocese of Rarotonga (Latin: Dioecesis Rarotongana) in the Cook Islands is a suffragan diocese of the Roman Catholic Archdiocese of Suva in neighbouring Fiji. It was erected as the Prefecture Apostolic of Cook and Manihiki in 1922, elevated to the Vicariate Apostolic of Cook Islands in 1948 and elevated as the Diocese of Rarotonga in 1966.
Primary Schools
Saint Josephs School, Rarotonga
Saint Mary's School, Mauke Island (now closed down)
Secondary (High) School
Nukutere College, Rarotonga
Catholic Cathedral of Rarotonga (and the Cook Islands)
Saint Joseph's Cathedral is the only Catholic Cathedral in the Cook Islands. The Cathedral is located in Avarua.
Three Catholic churches in Rarotonga also serve the local faithful: St Mary's in Arorangi Village, St Paul's in Titikaveka Village and Sacred Heart in Matavera village.