Awards
Supasit Boonsanong has extensive experience in complex cross-border energy transactions, including project finance, M&As, and operations in renewable, oil, gas, and petrochemical sectors. He advises leading energy companies on project development, joint ventures, licensing, supply, construction, and financing agreements, and is skilled in negotiating EPC contracts.
He leads the legal team advising Thai authorities on petroleum law amendments and teaches petroleum and investment law at Chulalongkorn University.
With over 20 years at top international law firms in Bangkok and over 15 years as general counsel for Thailand’s National Petrochemical Company, Supasit offers extensive legal expertise in the energy field.
Practice Areas
Education/Professional Experience
- 1984
- Chulalongkorn University (LL.B.)
- 1983 - 1986
- APA International Law Office
- 1987 - 2000
- Manager of Legal Office, National Petrochemical PLC
- 1991
- The Centre for Energy, Petroleum and Mineral Law and Policy, University of Dundee (LL.M.)
- 1994 - 2025
- Special Lecturer, Faculty of Law, Chulalongkorn University
- 1996 - 1997
- Special Lecturer, Faculty of Engineering, Kasetsart University
- 2000 - 2018
- Partner, Chandler & Thong - ek Law Offices Ltd. (currently Chandler Mori Hamada Limited)
- 2018 - 2019
- Partner, The Phenomena Ltd., Bangkok
- 2019 - 2025
- Partner, Tilleke & Gibbins International Ltd., Bangkok
- 2025 - present
- Partner (Thailand), Nagashima Ohno & Tsunematsu
