| Jurisdiction: | Diocese |
| Surabaya | |
| Latin: | Dioecesis Surabayana |
| Local: | Keuskupan Surabaya |
| Country: | Indonesia |
| Coat Size: | 150px |
| Incumbent: | Sede vacante |
| Metropolitan: | Semarang |
| Denomination: | Catholic Church |
| Sui Iuris Church: | Latin Church |
| Rite: | Latin Rite |
| Cathedral: | Cathedral of the Sacred Heart of Jesus, Surabaya |
| Area Km2: | 24,461 |
| Population: | 3,400,000 |
| Population As Of: | 2004 |
| Catholics: | 150,457 |
| Catholics Percent: | 4.4 |
| Bishop: | Sede vacante |
| Metro Archbishop: | Robertus Rubiyatmoko |
The Roman Catholic Diocese of Surabaya (Latin: Dioecesis Surabayana) is a suffragan Latin diocese, located on Java island, in Indonesia and administers parishes in the northern and western parts of East Java province.
Its episcopal see is at the Cathedral of the Sacred Heart of Jesus in Surabaya.
The diocese is currently in the period of sede vacante, as its former Bishop, Mgr. Vincentius Sutikno Wisaksono died on 10 August 2023, which left the bishopric throne vacant.
(all Roman rite, initially missionary members of a Latin congregation)
Apostolic Vicariate of Surabaya