- 1919: Established as Titular Archiepiscopal See of Laodicea (latine) / Laodicea di Teodoriade (Italiano)
- 1925: Renamed as Titular Archiepiscopal See of Laodicea ad mare (latine) / Laodicea di Siria (Italiano)
- 1929: Renamed as Titular Archiepiscopal See of Laodicea (latine) / Laodicea di Siria (Italiano)
- 1933: Renamed as Titular Archiepiscopal See of Laodicea in Syria (latine) / Laodicea di Siria (Italiano) / Laodicen(sis) Maronitarum (Latin)
- 1977.08.04: Suppressed (to Diocese of Latakia)