Anne Frances Twomey AO (pronounced "tooʼ-me") is an Australian academic and lawyer specialising in Australian constitutional law. She is currently the Professor of Constitutional Law and Director of the Constitutional Reform Unit at Sydney Law School at the University of Sydney.^[2] She is a regular commentator on legal and constitutional issues for the Australian media.^[3]

Twomey holds degrees in Arts and Law from the University of Melbourne, a Master of Laws from the Australian National University,^[2] and a Doctor of Philosophy from the University of New South Wales.^[4]

Twomey has worked for the High Court of Australia as a Senior Research Officer, for the Parliament of Australia as a researcher in the Law and Government Group, and The Cabinet Office of New South Wales as Policy Manager of the Legal Branch. She has acted as a consultant to a number of government bodies.

Twomey is regarded as an expert on the Constitution of Australia.^[5]

In 2019, Twomey was appointed to a New South Wales Government panel to examine the financial relationship between the state and federal governments.^[6]

• Twomey, Anne (2004). The Constitution of New South Wales. Sydney: Federation Press. ISBN 1-86287-516-2. OCLC 61028683.
• Twomey, Anne (2006). The chameleon crown : the Queen and her Australian governors. Annandale, N.S.W.: Federation Press. ISBN 978-1-86287-629-3. OCLC 180584114.^[7]
• Twomey, Anne (2010). The Australia Acts 1986 : Australia's statutes of independence. Sydney: Federation Press. ISBN 978-1862878075. OCLC 673260171.
• Twomey, Anne (2018). The veiled sceptre : reserve powers of heads of state in Westminster systems. Cambridge, United Kingdom. ISBN 978-1-107-05678-7. OCLC 999609166.{{cite book}}: CS1 maint: location missing publisher (link)^[8]

Twomey was appointed an Officer of the Order of Australia in the 2021 Queen's Birthday Honours, for "distinguished service to the law, to legal education, and to public education on constitutional matters".^[9]

Twomey is married to Justice Mark Leeming, a judge on the New South Wales Court of Appeal.^[10][11]

In 2022, Twomey started the "Constitutional Clarion" YouTube channel, where she publishes her work for a more general audience. Twomey supports the Indigenous Voice to Parliament.