The Catholic Church in Northern Arabia comprises only one exempt Latin Apostolic Vicariate missionary pre-diocesan jurisdiction, entitled to a titular bishop: the Apostolic Vicariate of Northern Arabia, in Kuwait City, which covers all of Kuwait, Bahrain, Saudi Arabia and Qatar.
There is no Eastern Catholic jurisdiction on the Arabian Peninsula.
The Apostolic Nunciatures (papal representations at embassy level) to Bahrain, to Qatar, and to Kuwait are all vested in the Apostolic Nunciature to Kuwait.
The papal diplomacy also nominally includes a joint Apostolic Delegation of Arabic Peninsula for Saudi Arabia (which has no papal legation), Bahrain and Oman (which has no papal legation), which is also vested in the Apostolic Nunciature to and in Kuwait.
There are no defunct proper jurisdictions in Bahrain, Oman, Qatar or Saudi Arabia.