伊丽莎白二世的头衔全称为“承上帝洪恩，大不列颠及北爱尔兰联合王国与其属土及领地之女皇伊丽莎白二世，英联邦元首，（基督教）信仰的保护者（Elizabeth the Second, by the Grace of God, of the United Kingdom of Great Britain and Northern Ireland and of Her other Realms and Territories Queen, Head of the Commonwealth, Defender of the Faith）