| Jurisdiction: | Diocese |
| Wallis et Futuna | |
| Latin: | Dioecesis Uveanus et Futunensis |
| Local: | Diocèse de Wallis et Futuna |
| Country: |  Wallis and Futuna, France |
| Province: | Nouméa |
| Metropolitan: | Archdiocese of Nouméa |
| Area Km2: | 256 |
| Population: | 14,231 |
| Population As Of: | 2010 |
| Catholics: | 13,631 |
| Catholics Percent: | 95.8 |
| Denomination: | Catholic |
| Established: | 11 November 1935 (As Vicariate Apostolic of Wallis et Futuna) 21 June 1966 (As Diocese of Wallis et Futuna) |
| Cathedral: | Cathedral of Our Lady of the Assumption, Mata-Utu |
| Patron: | Peter Chanel |
| Bishop: | Susitino Sionepoe, S.M. |
| Metro Archbishop: | Michel-Marie-Bernard Calvet |
| Suffragan: | for one --> |
| Archdeacon: | for one--> |
| Emeritus Bishops: | Ghislain Marie Raoul Suzanne de Rasilly, S.M. |
The Roman Catholic Diocese of Wallis et Futuna (Latin: Dioecesis Uveanus et Futunensis; French: Diocèse de Wallis et Futuna) in Wallis and Futuna is a suffragan diocese of the Roman Catholic Archdiocese of Nouméa. It was erected as a Vicariate Apostolic in 1935 and elevated to a diocese in 1966. The Bishop of Wallis et Futuna is a member of the Episcopal Conference of the Pacific.