| Jurisdiction: | Diocese |
| Border: | Catholic |
| Iligan | |
| Latin: | Dioecesis Iliganensis |
| Local: | Diyosesis sa Iligan Diyosesis ng Iligan |
| Coat: | File:Diocese of Iligan Coat of arms.svg |
| Coat Size: | 150px |
| Country: |  Philippines |
| Province: | Ozamis |
| Territory: | Lanao del Norte (Bacolod, Baroy, Iligan City, Kapatagan, Kauswagan, Kolambugan, Lala, Linamon, Magsaysay, Maigo, Salvador, Sapad, Tubod) |
| Area Km2: | 3,092 |
| Population: | 1,206,648 |
| Population As Of: | 2021 |
| Catholics: | 715,562[1] |
| Parishes: | 26 |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Roman Rite |
| Established: | February 17, 1971 (Prelature), November 15, 1982 (Diocese) |
| Cathedral: | St. Michael's Cathedral |
| Patron: | Michael the Archangel |
| Priests: | 40 |
| Bishop: | Jose Ramirez Rapadas, III |
| Metro Archbishop: | Martin Jumoad |
| Vicar General: | Msgr. Rey Pati-an |
The Diocese of Iligan (Lat: Dioecesis Iliganensis) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in the Philippines, comprising 26 parishes in Iligan City and twelve municipalities located at the northern half of the province of Lanao del Norte.
Erected on February 17, 1971, as a territorial prelature out of the newly elevated Diocese of Ozamis, it was subdivided on November 20, 1976, to form the new Territorial Prelature of Marawi.
On November 15, 1982, the prelature nullius was elevated to a full diocese and is a suffragan first to the Archdiocese of Cagayan de Oro and then later to the Archdiocese of Ozamis after its elevation on January 24, 1983.
The current bishop is Jose Rapadas III, appointed in 2019. Bishop Rapadas was a diocesan clergyman from the Diocese of Ipil in the province of Zamboanga Sibugay. He is the fifth bishop of the Diocese
| No. | Name | From | Until | Consecrated Bishop | Coat of Arms | ||
|---|---|---|---|---|---|---|---|
| 1 | Bienvenido Solon Tudtud† | February 17, 1971 | April 25, 1977 | ||||
| 2 | April 25, 1977 | June 28, 1994 | April 2, 1975 | ||||
| Sede vacante (June 29, 1994 - May 2, 1995) | |||||||
| 3 | May 3, 1995 | June 21, 2004 | April 19, 1990 | ||||
| Sede vacante (June 22, 2004 - March 24, 2006) | |||||||
| 4 | March 25, 2006 | December 5, 2017 | September 8, 2006 | ||||
| Sede vacante (December 6, 2017 - June 12, 2019) [2] | |||||||
| 5 | June 13, 2019[3] | Incumbent | August 20, 2019 | ||||