Peter Semmler OAM KC

Areas of Practice



Conducting Mediations, Common Law, Dust Diseases, Abuse cases, Public Liability, Medical Negligence.

All Australian jurisdictions

Peter Semmler was educated at the University of Cambridge and the College of Law, London.

He is a barrister-at -law of the Inner Temple, London.
He has practised at the New South Wales bar since 1974, primarily in common law claims, on behalf of both defendants and plaintiffs.

He has appeared in a number of important High Court appeals, including in Wynn v New South Wales Insurance Ministerial Corporation (1995) 184 CLR 485, Tame v New South Wales (2002) 211 CLR 317 and Vairy v Wyong Shire Council (2005) 223 CLR 422.

He has also appeared in numerous High Court special leave applications and in the Federal Court as well as in many appeals to the Court of Appeal of New South Wales and South Australia. He has conducted a large number of trials in the Supreme Courts of New South Wales, Victoria, Western Australia, and the Australian Capital Territory, as well in lower courts.

He was appointed Queens Counsel in 1992.
He received an Order of Australia award in the 2021 Queen’s Birthday Honours list for service to the law.

In recent years he has acted as mediator in a variety of types of disputes.

In doing so he has successfully applied his knowledge gained over decades of appearances in court to assist parties to avoid the uncertainty, cost and stress of going to court by settling their disputes in an efficient, cost-effective and civilised manner.

He is a former Barrister-Member of the Legal Services Tribunal of New South Wales and a former Commissioner of the Legal Aid Commission of New South Wales.


Contact via the clerk.