Holy See

The Holy See (Latin: Sancta Sedes, Italian: Santa Sede) is the episcopal jurisdiction of the Catholic Church in Rome. The primacy of Rome makes its bishop the worldwide leader of the church, commonly known as the Pope. Since Rome is the preeminent episcopal see of the Church, it contains the central government of the church, including various agencies essential to administration. Diplomatically, the Holy See acts and speaks for the whole Roman Catholic Church. It is also recognized by other subjects of international law as a sovereign entity, headed by the Pope, with which diplomatic relations can be maintained."

Often incorrectly referred to as "the Vatican", the Holy See is not the same entity as the Vatican City State, which came into existence only in 1929; the Holy See, the episcopal see of Rome, dates back to early Christian times. Ambassadors are officially accredited not to the Vatican City State but to "the Holy See", and papal representatives to states and international organizations are recognized as representing the Holy See, not the Vatican City State.

Though all episcopal sees may be considered "holy", the expression "the Holy See" (without further specification) is normally used in international relations (and in the canon law of the Roman Catholic Church) to refer to the See of Rome viewed as the central government of the Roman Catholic Church.

The British Foreign and Commonwealth Office speaks of Vatican City as the "capital" of the Holy See, although it compares the legal personality of the Holy See to that of the Crown in Christian monarchies and declares that the Holy See and the state of Vatican City are two international identities. It also distinguishes between the employees of the Holy See (2,750 working in the Roman Curia with another 333 working in the Holy See's diplomatic missions abroad) and the 1,909 employees of the state. The British Ambassador to the Holy See uses more precise language, saying that the Holy See "is not the same as the Vatican City State. … (It) is the universal government of the Catholic Church and operates from the Vatican City State." This agrees exactly with the expression used by the website of the United States Department of State, in giving information on both the Holy See and the Vatican City State: it too says that the Holy See "operates from the Vatican City State".