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About Jonathan

Jonathan Milner is a partner of the firm’s dispute resolution & litigation and restructuring & insolvency practice groups in Sydney.

He has been involved in some of Australia’s largest and most public commercial matters, including a range of class actions, high profile commercial disputes, corporate regulatory inquiries and white-collar crime.

In 2022 Jonathan was named as ‘Lawyer of the Year’ for ‘Bet-the-Company Litigation’ by Best Lawyers® International and has previously been named as ‘Lawyer of the Year’ for the category of Alternative Dispute Resolution. Jonathan is also regularly ranked as one of Australia’s leading dispute resolution practitioners in Chambers Asia Pacific, Legal 500 Asia Pacific and Doyles Guide.

Jonathan graduated from The University of New South Wales in 1999 and was admitted to practise as a solicitor of the Supreme Court of NSW and the High Court of Australia. He joined Arnold Bloch Leibler in 2006 and was appointed as a partner in 2009.

‘Lawyer of the Year’ for ‘Bet-the-Company Litigation’

Best Lawyers® International guide

Practice focus

Jonathan’s practice focuses on:

  • commercial litigation and dispute resolution, including class action defence
  • corporate regulatory investigations and white-collar crime, and
  • corporate recovery and insolvency.


Jonathan has acted for a wide variety of corporate and private clients, including:

  • the board of Star Entertainment Group Limited: in connection with the inquiry into The Star’s suitability to hold a NSW casino licence
  • the non-executive directors of Dick Smith: in relation to class actions and claims by the receivers of the Dick Smith group
  • Michael Richardson: an accused in significant criminal cartel proceedings commenced by the Commonwealth Director of Public Prosecutions (the charges have since been dropped)
  • A former director NUIX: in relation to multiple class actions commenced in the Supreme Court of Victoria
  • Geoff Summerhayes: in relation to class action proceedings concerning Suncorp
  • Dr Gordon Fell: in relation to investigations by ASIC and litigation commenced by the receivers and managers of Allco
  • Senator Arthur Sinodinos AO: in relation to an ICAC investigation and related Federal Court Proceedings
  • James Black, the former CEO of ABC Learning: in relation to criminal proceedings commenced by the Commonwealth Director of Public Prosecutions
  • Dan O’Brien, a non-executive director of James Hardie: in relation to civil penalty proceedings commenced by ASIC
  • Centuria: in relation to a range of disputes
  • CCL Industries: in relation to a variety of matters including a claim by Dr Benoy Berry in the Federal Court of Australia
  • the estate of the late Richard Pratt: in relation to proceedings commenced by Madison Ashton in the Supreme Court of NSW
  • Steven Hui Xiao, the former managing director of Hanlong Mining: in relation to ASIC’s investigation into insider trading by the executives of Hanlong Mining
  • a senior executive: in relation to ASIC investigations concerning the Everest Financial Group
  • a former senior executive of Aston Resources: in relation to a contractual claim against Aston Resources in the Supreme Court of NSW
  • the financial guarantors of the Reliance Rail/Waratah trains project: in relation to the restructure of that project and associated litigation in the NSW Supreme Court
  • Newmont Mining Corporation: in relation to legal proceedings arising out of the restructure of Newmont’s Australian operations
  • Specialty Fashion Group: in relation to a dispute arising out of the sale of its discount variety business and in relation to Court proceedings concerning the fraudulent misappropriation of funds by a senior executive
  • Telstra: in relation to the liquidation of One.Tel
  • Tricom: in relation to the workout of its margin lending business, and
  • Challenger Group: in Supreme Court of NSW litigation arising out of Challenger’s investment in an Australian equities fund.

Jonathan has also acted for numerous other clients in a range of commercial disputes, regulatory investigations and white-collar crime litigation, including a number of high-profile insider trading investigations and associated litigation. He also regularly advises directors, banks and financial institutions including various private equity groups and hedge funds in relation to a wide variety of matters.

"Jonathan is a tenacious, articulate and very commercial litigation specialist with a breadth of invaluable experience.”

Client quote

Awards & recognition

Jonathan is recognised as a leading lawyer by various international guides to lawyers and law firms, including:

  • Best Lawyers® International: alternative dispute resolution, bet the company litigation, class action litigation, corporate/governance practice, insolvency & reorganisation law and litigation
  • Chambers Asia Pacific: anti-bribery & corruption and dispute resolution
  • Doyle’s Guide: litigation & dispute resolution and insolvency & restructuring
  • Legal 500 Asia Pacific: dispute resolution and white collar crime, and
  • Who’s Who Legal: business crime, investigations and asset recovery.

Contact Jonathan Milner

Recognition & publications

Take a look at Insights & News articles referencing Jonathan Milner