Dr Siphana Sok

Founding Partner
SokSiphana&associates(a member of ZICO Law)
d.+855 23 999 878f.+855 23 999 878


Dr Sok is a practicing attorney and the founding partner at SokSiphana&associates (a member of ZICO Law), a law and consulting firm specialized in international trade and corporate law in Phnom Penh.

Dr Sok has unique experiences and insights related to the development of the Cambodian legal system, the business environment and the intricacy of the commercial and investment law evolution in Cambodia. His vast hands on experiences as a former Commerce Secretary of State (Vice Minister) in the Cambodian Government, where he worked extensively on issues related to commercial and investment legal framework, trade promotion, trade policies, trade development, and economic intégration, gives him a unique perspective on both the macro and micro needs of businesses and foreign investors alike. In the area of policy formulation and policy mainstreaming he was responsible for leading a large multidisciplinary inter-agency task force to prepare complex action plans (including the National Legislative and Regulatory Agenda) and to negotiate successfully Cambodia’s accession to the WTO. He was also instrumental in initiating the development of the first ever trade Sector Wide Approach (SWAp) for Cambodia.

He was responsible not only for the preparation of the various commercial laws currently in force in Cambodia, but also for their defense in front of the Council of Ministers, the National Assembly and the Senate.


Previously from 1999 to 2005, Dr Sok served as Secretary of State at the Ministry of Commerce, where he worked extensively on issues related to trade policies and development, commercial legal framework and economic integration. During his service at the Ministry, he was also a negotiator in Cambodia’s accession to the World Trade Organization (WTO). From October 2005 to July 2009 he served as Director at the International Trade Center (ITC) a joint technical agency of the UNCTAD and the WTO in Geneva, Switzerland.

He was appointed by Prime Minister Samdech Decho Hun Sen as Advisor of the Royal Government of Cambodia and Advisor to the Supreme National Economic Council with rank of Minister in August 2009 and November 2011 respectively. He is the Chairman of the Board of Cambodia Development Resource Institute (CDRI), Cambodia’s oldest and prominent independent research institute. He resumed legal practice in 2009.


  • Juris Doctor from the Widener University School of Law in Delaware, United States
  • Doctor of Philosophy from Bond University School of Law in Queensland, Australia
  • Member of Cambodian Bar
  • Member of Pennsylvania Bar (inactive status)


  • Tier 1, General business law, Legal 500, 2020
  • Band 1, General business Law, Chambers Asia Pacific, 2015-2021
  • Band 1, General business Law, Chambers Global, 2017-2021
  • Distinguished Practitioner: Corporate/M&A, Real Estate, Asialaw Profiles, 2021
  • Highly Regarded, Mergers & Acquisitions, IFLR1000, 2018
  • Leading Lawyer, IFLR1000, 2015-2017

He’s a band one, grade A, first-rate lawyer.” – Client feedback

Matthew Rendall comes highly regarded by peers, who consider him to be both “great on the legal point of law” and “very hands-on, a real lawyer’s lawyer.” – Editorial Feedback

A very capable lawyer with a good network in the legal community.” – Client feedback


On 1 December 2022, KPMG and ZICO Law entered into an agreement under which a number of law firms and teams from the ZICO Law network have joined the KPMG network of firms.

The deal will see more than 275 lawyers join over 2,900 legal professionals in the KPMG global organization, creating a significant legal footprint across Asia. It will offer legal services and solutions, a globally connected legal services platform, and specialists who work with leading technology providers to modernize legal functions across organizations. The strategic combination increases the total number of legal professionals in the KPMG network to close to 3,200 across 84 jurisdictions. You may read the press release here.

For more information and to see how we can assist you in your desired jurisdiction, please follow the links below: