Rite: Roman (Latin)
Type: Titular Episcopal See 
Name: Daonium (latine) / Daonio (Italiano) / Daonien(sis) (Latin)
Location: Eski-Eregli, pr. Europa, m. Eraclea, Turkiye
- 1925: Established as Titular Episcopal See of Danium (latine) / Danio (Italiano)
- 1929: Renamed as Titular Episcopal See of Daonium (latine) / Danio (Italiano)
- 1933: Renamed as Titular Episcopal See of Daonium (latine) / Danio (Italiano) / Daonio (Italiano)
- 1973: Renamed as Titular Episcopal See of Daonium (latine) / Daonio (Italiano) / Daonien(sis) (Latin)
