Royal Style & Titles Act (1973)

It was this act of the Australian parliament which created the Queen’s Australian title:
Elizabeth II, by the Grace of God Queen of Australia and Her other Realms and Territories, Head of the Commonwealth

Act No. 114 of 1973
This Act, currently in force, gives the Queen her specific Australian title.
This Act was prepared on 29 April 2002

An Act relating to the Royal Style and Titles
WHEREAS, in accordance with the Royal Style and Titles Act 1953 [see Note 2], Her Majesty, by Proclamation dated 28th May, 1953, adopted, as the Royal Style and Titles to be used in relation to the Commonwealth of Australia and its Territories, the Style and Titles set forth in the Schedule to that Act:
AND WHEREAS the Government of Australia considers it desirable to propose to Her Majesty a change in the form of the Royal Style and Titles to be used in relation to Australia and its Territories:
AND WHEREAS the proposed new Style and Titles, being the Style and Titles set forth in the Schedule to this Act, retains the common element referred to in the preamble to the Royal Style and Titles Act 1953: [see Note 2]
BE IT THEREFORE enacted by the Queen, the Senate and the House of Representatives of Australia, as follows:

1 Short title [see Note 1]
This Act may be cited as the Royal Style and Titles Act 1973.

2 Assent to adoption of new Royal Style and Titles in relation to Australia
(1) The assent of the Parliament is hereby given to the adoption by Her Majesty, for use in relation to Australia and its Territories, in lieu of the Style and Titles set forth in the Schedule to the Royal Style and Titles Act 1953, [see Note 2] of the Style and Titles set forth in the Schedule to this Act, and to the issue for that purpose by Her Majesty of Her Royal Proclamation under such seal as Her Majesty by Warrant appoints.
(2) The Proclamation referred to in subsection (1) shall be published in the Gazette and shall have effect on the date upon which it is so published. [see Note 1]

Schedule—Royal Style and Titles
Section 2
Elizabeth the Second, by the Grace of God Queen of Australia and Her other Realms and Territories, Head of the Commonwealth.

Notes to the Royal Style and Titles Act 1973
Note 1
Act No. 114, 1973; assented to 19 October 1973 and commenced 19 October 1973 (see Gazette 1973, No. 152).

Note 2
Preamble and s. 2(1)—The Royal Style and Titles Act 1953 was repealed by the Statute Law Revision Act 1973 (No. 216, 1973).