| Jurisdiction: | Diocese |
| Alleppey | |
| Latin: | Latin: Dioecesis Alleppeyensis |
| Local: | Malayalam: ആലപ്പുഴ രൂപത |
| Country: |  India |
| Province: | Trivandrum |
| Metropolitan: | Trivandrum |
| Rite: | Roman Rite |
| Cathedral: | Cathedral of Our Lady of Mount Carmel in Alappuzha |
| Patron: | Our Lady of Mount Carmel, St. Joseph the Worker |
| Area Km2: | 333 |
| Population: | 805,000 |
| Population As Of: | 2015 |
| Catholics: | 163,076 |
| Catholics Percent: | 20.3 |
| Bishop: | James Raphel Anamparambil |
| Metro Archbishop: | Thomas J. Netto |
| Priests: | 133 |
| Parishes: | 66 |
| Headquarters: | Alappuzha |
| Denomination: | Roman Catholic Church |
| Archdiocese: | Roman Catholic Archdiocese of Trivandrum |
The Roman Catholic Diocese of Alappuzha (Latin: Alleppeyen(sis)) is a diocese centered on the city of Alleppey in the ecclesiastical province of Trivandrum in India. It lies along the Arabian Sea between the dioceses of Cochin and Quilon, covering an area of 333 square kilometers.The Diocese of Alappuzha is headed by the bishop, Bishop James Raphel Anamparambil (incumbent since 2019).[1] The Episcopal see is the Bishop's House which is located near the Alappuzha Beach. The cathedral church of Alleppey is the Our Lady of Mount Carmel Cathedral located at Convent Square, Alappuzha.
St. Antony's Orphanage, founded by the Diocese of Alappuzha, is located opposite the Mount Carmel Cathedral, Alappuzha.[2] More than ten thousands of alumni's are working in different parts of the world from this organization which was firmly established by Reynolds Purackal and Former Bishop Michael Arattukulam.[3] [4]