The Roman Catholic Diocese of Tombura-Yambio () is a diocese located in the cities of Tombura and Yambio (Yambio County) in the ecclesiastical province of Juba in South Sudan.

History March 3, 1949: Established as Apostolic Prefecture of Mupoi from Apostolic Prefecture of Bahr el-Gebel and Apostolic Vicariate of Bahr el-Ghazal December 12, 1974: Promoted as Diocese of Tombura February 21, 1986: Renamed as Diocese of Tombura–Yambio

Leadership Prefect Apostolic of Mupoi (Roman rite) Bishop Domenico Ferrara, M.C.C.I. (1949.03.11 – 1973.04.18) Bishop of Tombura (Roman rite) Bishop Joseph Abangite Gasi (1974.12.12 – 1986.02.21 see below) Bishops of Tombura-Yambio (Roman rite) Bishop Joseph Abangite Gasi (see above 1986.02.21 - 2008.04.19) Bishop Edward Hiiboro Kussala (since 19 April 2008)

Parishes and Churches Cathedral of Christ the King Yambio – The mother church of the diocese Ezo Parish Holy Cross Parish, Nzara St. Mary's Church, Tombura Nzara Parish Mupoi Parish Ave Maria Parish, Ngboko Our Lady of Fatima Catholic Parish, Maridi Assumption of Our Lady Catholic Parish, Rimenze

See also Roman Catholicism in South Sudan

Sources GCatholic.org Diocese of Tombura-Yambio website