Catholic dioceses in Indonesia are grouped into 10 ecclesiastical provinces, consisting of 10 archdioceses and 38 suffragan dioceses and 1 military ordinariate. The bishops who lead each ecclesiastical region are members of the Bishops' Conference of Indonesia (BCI).
| Map | Diocese | Coat of Arms |
|---|---|---|
Ecclesiastical Province of Ende | ||
 | Archdiocese of Ende | |
| Diocese of Denpasar | ||
| Diocese of Labuan Bajo |  | |
| Diocese of Larantuka |  | |
| Diocese of Maumere | ||
| Diocese of Ruteng | ||
Ecclesiastical Province of Kupang | ||
 | Archdiocese of Kupang | |
| Diocese of Atambua | ||
| Diocese of Weetebula | ||
