List of Catholic dioceses in Indian Ocean Episcopal Conference

The Roman Catholic Church in the lesser East African Indian Ocean states (not Madagascar) is composed of only a Latin hierarchy, without a proper ecclesiastical province but joined in a single episcopal conference, comprising five exempt jurisdictions, i.e. directly dependent on the Holy See : There are no titular sees.

All defunct jurisdictions have current successors.

There are also three papal diplomatic representations (in fact all vested in the apostolic nunciature (embassy) on Madagascar) :