| Jurisdiction: | Diocese |
| Morondava | |
| Latin: | Dioecesis Morondavensis |
| Country: | Madagascar |
| Metropolitan: | Toliara |
| Rite: | Latin Rite |
| Area Km2: | 46,620 |
| Population: | 460,200 |
| Population As Of: | 2004 |
| Catholics: | 41,620 |
| Catholics Percent: | 9.0 |
The Roman Catholic Diocese of Morondava (Latin: Morondaven(sis)) is a suffragan Latin diocese in the ecclesiastical province of Toliara (one of five in Madagascar), yet depends on the missionary Roman Congregation for the Evangelization of Peoples.
Its cathedral episcopal see is the (Marian) Cathédrale Maria Manjaka Namahora, in the city of Morondava, Toliara province.
As per 2014, it pastorally served 54,895 Catholics (9.8% of 560,000 total) on 45,200 km2 in 17 parishes and 26 missions with 42 priests (8 diocesan, 34 religious), 156 lay religious (39 brothers, 117 sisters) and 20 seminarians.
(all Roman rite, so far -mostly European missionary- members of Latin congregations)