The Roman Catholic Diocese of Aitape is a suffragan diocese of the Roman Catholic Archdiocese of Madang. It was established in 1952.
Coordinates: 3°09′08″S 142°21′54″E / 3.1521°S 142.3650°E
The history of the Diocese from both an historical and ethnographic perspective can be found with SJ Duggan. (1983). In the Shadow of Somoro: the Franciscan experience in the Sepik 1946-1975, MA Thesis Latrobe University Australia, and SJ Duggan. (1991). Sandaun: A contribution to the study of education and development in the Sepik in the Sepik 1896-1988, Ph.D. Thesis, Latrobe University Australia.