Titular Episcopal See of Casius, Egypt

Rite: Roman (Latin)

Name: Casius (latine) / Casio (Italiano) / Casiotan(us) (Latin)

Location: ruins of Mahemdiah, pr. Augustamnica I, m. Pelusio, Egypt

Titular Bishop:

vacant

Titular Bishop: Bishop Renatus Lwamosa Butibubage (1959.12.19 – 1966.01.15)
Titular Bishop: Bishop Félix Scalais, C.I.C.M. (later Archbishop) (1953.06.29 – 1959.11.10)
Titular Bishop: Bishop Augustinus Philipp Baumann (1932.10.28 – 1953.02.20)
Titular Bishop: Bishop André-Etienne-Athanase Hermel, SS.CC. (1905.05.15 – 1932.02.20)
Titular Bishop: Bishop Gaudenzio Bonfigli, O.F.M. (later Archbishop) (1881.08.19 – 1890.08.19)
Titular Bishop: Bishop Guglielmo Massaia, O.F.M. Cap. (later Cardinal) (1846.05.12 – 1881.08.02)
Titular Bishop: Bishop Ioannes Berčić (1840.07.13 – 1846.04.16)
Titular Bishop: Bishop Ignacy Giedroyć (1824.05.24 – 1829)
Titular Bishop: Bishop Juan Antonio Pérez Arellano (1739.02.23 – 1756.03.16)
Titular Bishop: Bishop James Cusack (1678.10.05 – 1679.11.18)

Established as Titular Episcopal See of Casium (latine) / Casio (Italiano)
1925: Renamed as Titular Episcopal See of Casium (latine) / Casio (Italiano) / Casius (latine)
1929: Renamed as Titular Episcopal See of Casius (latine) / Casio (Italiano) / Casiotan(us) (Latin)