On 4 June 1992 Australians for Constitutional Monarchy held their first public meeting at Sydney Town Hall attended by about 450 people.

The foundation council included the former Chief Justice of the High Court, Sir Harry Gibbs; the Chancellor of Sydney University, Dame Leonie Kramer; former Sydney Lord Mayor, Mr Doug Sutherland; the President of the NSW Court of Appeal, Justice Michael Kirby; former Liberal Party Federal President, Sir John Atwill; and Mr Barry O'Keefe QC.

The group also organised a public protest against the eviction of New South Wales Governor Gordon Samuels from Government House by Premier Bob Carr, in 1996.

Active campaigning continued and in 2011, Premier Barry O'Farrell agreed to return Governor Marie Bashir to Government House.

Past speakers have included Prime Minister John Howard and former Official Secretary to the Governor-General of Australia Sir David Smith.

ACM currently makes a point of fighting what Michael Kirby called "a republic by stealth," which they define as subtle removal of the Crown from Australian life.

Young ACM supporters distributed sheets setting out the words of the National and Royal Anthems to the crowds going into the opening ceremony.

In the end, the attendees in the stadium joined Dame Kiri Te Kanawa in singing "Happy Birthday" as well as eight bars of the Royal Anthem.

The original Foundation Council included people such as Michael Kirby (a former Justice of the High Court), Justice Lloyd Waddy, Dame Leonie Kramer, Barry O'Keefe, Helen Sham-Ho, and others, including the late Neville Bonner, Dr. Margaret Olley, Sir Harry Gibbs, and Sir John Atwill.