Member of Management Committee of the Hong Kong Office
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Dorothy Siron, the Co-Managing partner of Zhong Lun Law Firm’s Hong Kong office, is a widely respected litigator who specializes in cases involving cyber fraud and other financial and white-collar crimes in Hong Kong and abroad.

Dorothy heads the Litigation/Arbitration and Dispute Resolution practice, with a focus on cross-border casework. She obtains high rates of return for her clients who are victims of significant financial crimes, often obtaining Mareva Injunctions and Bankers’ Records Orders to trace assets to pursue recovery.

Her expertise encompasses white collar crime, complex international trade and commercial disputes, enforcement of foreign judgments and multifaceted trust and probate disputes, and family law matters.

Dorothy frequently handles disciplinary actions against listed companies and their directors and officers instigated by the Securities and Futures Commission (SFC), as well as enquiries by the Independent Commission Against Corruption (ICAC).

In her worldwide pursuit of wrongfully obtained assets, Dorothy draws upon her background as a global citizen and her wide range of contacts. A Fellow of The International Academy of Financial Crime Litigators, she works regularly with a worldwide network of lawyers and investigators.

She also commits time and energy to increasing the body of knowledge about financial crimes, collaborating with other experienced practitioners and academics in The Academy under the auspices of the Basel Institute on Governance in Switzerland and is an active participant in many professional organizations.

Born, raised and certified as a solicitor in Hong Kong, Dorothy spent several formative years achieving recertification in Canada. When she returned to Hong Kong, Dorothy joined a law firm that serviced all 13 Chinese banks before they merged, listed and became today’s Bank of China.

After increasing her portfolio of files exponentially, she joined a Canadian based law firm in Hong Kong. In 2015 that firm fully merged with the Zhong Lun Law Firm.

Dorothy was promoted to Co-Managing partner of Zhong Lun Law firm, Hong Kong office effective January 2021.

  • Recognised by Legal 500 Asia Pacific 2021 & 2022 as one of the key lawyers in Private Client (Tax, Trusts, Wealth Management, Contentious Probate) Practice
  • Shortlisted in Litigator of the Year (North Asia) by the ALB Inaugural Women in Law Awards 2021
  • Shortlisted in White Collar Crime and Litigation by Women in Business Awards Asia-Pacific 2021
  • Shortlisted in Litigation by Women in Business Awards Asia-Pacific 2020

“Whether seeking made-to-order solutions or strategizing steps forward, Dorothy will tailor make solutions with the clients’ best interest as her paramount consideration.”

International Comparative Legal Guide, UK

“Ms. Dorothy Siron has very in-depth knowledge of the Hong Kong Court procedures. I’m sure she’s an advocate in her own right. She is very sound tactically, and steady, with a wealth of experience. She would be our first choice.”

Chambers Asia Pacific 2017

“Under the guidance of Dorothy Siron, the team is also well-versed at advising on private client-related disputes, including as it relates to highly contested divorce and custody cases, as well as trusts and estate litigation.”

Legal 500 Asia Pacific Guide 2021

Representative Matters
  • Frequently assisting clients in the recovery funds for victims of cyber fraud and fraud cases
  • Advising a major trust that was subject to Injunctions in HK and overseas on back-to-back multi-jurisdictional injunctions in Hong Kong and Singapore. The sums involved exceeded USD 280 million
  • Litigating in cross-border disputes between HK, PRC Chinese, Canadian and European parties involving claims over properties worldwide
  • Acting for a PRC investor to register an Arbitration Award obtained from the Beijing Arbitration Commission with the Hong Kong High Court and advising on enforcement measures. The amount in dispute exceeded RMB 7 million
  • Successfully representing numerous domestic and international trustees and beneficiaries before all levels of court
  • Obtaining local Mareva injunctions in Hong Kong ancillary to a worldwide asset-freezing orders in the United Kingdom and obtaining injunctions to assist victims of cyber-fraud
  • Defending Hong Kong Mareva injunctions obtained in support of multiple foreign proceedings in relation to high-value and high-profile disputes
  • Acting for an ultra-high net worth art dealer and his company in the Hong Kong High Court in opposing and discharging a multijurisdictional Mareva injunction against client’s assets of over USD 500 million
  • Acting in arbitrations involving the movement of coal in Mongolia to the shipment of oil across the Indian Ocean
  • Acting for the father in a wardship case involving a Non-Hague Convention country where the mother kidnapped their young children to Hong Kong and successfully returning the children to their home jurisdiction
  • Advising clients in shareholders’ disputes

Professional Affiliations
  • Director and Executive Committee Member of TerraLex, one of the world’s leading international network of independent law firms with 135 member law firms across 176 jurisdictions, with over 22,000 lawyers in 135 countries
  • Co-Chair of the Women’s Global Connections Committee of TerraLex
  • Fellow of the prestigious International Academy of Financial Crime Litigators (by invitation only)
  • Member of the International Association of Defense Counsel (IADC) (by invitation only) and Vice Chair of the International Board, responsible for Asia and Australia
  • Associate Member of the Chartered Institute of Arbitrators, U.K.
  • Past Committee Member of the National Asian Pacific American Bar Association (NAPABA), International Law Committee

Recent Presentations
  • “Build Back Better - or Slaves to the Technology of the Future”, Global Legal Group (ICLG Webinar), July 2021
  • “Crypto Fraud and New Generation Fraudsters”, C5 Conference, Hong Kong, June 2019
  • “Hong Kong/Asia: A popular destination for funds from cyber-fraud”, C5 Conference, Geneva, March 2019

Recent Publications
  • Author, Hong Kong Chapter of “CDR Essential Intelligence- Fraud, Asset Tracing and Recovery”, Spring 2021
  • Author, Hong Kong Chapter of “Global Crisis Management Regulatory Guide”, TerraLex
  • Author, Hong Kong Chapter of “Cross-Border Labor & Employment Guidance”, TerraLex
  • Author, Hong Kong Chapter of “TerraLex Guide to Tracing Assets Around the World”, TerraLex


Chinese (Cantonese)
Chinese (Putonghua)



International Litigation/Arbitration and Dispute Resolution
White Collar Crime and Criminal Compliance
Securities Regulatory and Enforcement
Labour and Employment
Probate, Trusts and Estates Litigation
Family Law


Hong Kong 1985

Solicitor (non-practicing)
England and Wales 1988

Barrister and Solicitor to the British Columbia Bar (non-practising)
British Columbia, Canada 1994


LL.B., University of Hong Kong
Hong Kong

P.C.L.L., University of Hong Kong
Hong Kong

Joint Accreditation, University of British Columbia