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Warathorn Wongsawangsiri

Work +662 264 8000
Weerawong, Chinnavat & Partners

Work Department

Dispute Resolution




Warathorn represents clients in domestic and international litigation and arbitration. His expertise includes administrative law, banking, bankruptcy and business reorganization, construction, energy, oil and gas, hotels and real estate, insurance, product liability and telecommunications.

Warathorn represents clients in the resolution and enforcement of disputes at the Thai Arbitration Institute (TAI), the Hong Kong International Arbitration Center (HKIAC) and the Singapore International Arbitration Center (SIAC). 

Professional Activities

Warathorn is afacilitator of the Thai Institute of Directors (IOD) Director Certification Program and Director Accreditation Program.  He is also a guest lecturer at several national law schools. He is the author of the Thailand chapters of The International Arbitration Review (The Law Reviews 2015-2018) and the Dispute Resolution Law Guide (LexisNexis 2018). He has been a board member of the Faculty of Law Chulalongkorn University Alumni Association since 2015.


English, Thai


Thai Barrister-at-Law, Thai Bar Association, admitted 2005

Lawyers License, Lawyers Council of Thailand, admitted 2004


LL.M. (Honors), Northwestern University School of Law, USA, 2010

LL.B. (1st Class Honors), Chulalongkorn University, 2004

Director Certification Program, Thai Institute of Directors


Dispute resolution

Within: Dispute resolution

Weerawong, Chinnavat & Partners occupies a space in the upper echelons of Thailand’s dispute resolution market, where it has achieved enviable successes in high-profile litigation. The litigation department works almost irrespective of industry sector, and is equipped to handle domestic disputes as well as cross-border matters, where it works closely with leading foreign firms. TMT litigation is a particular area of strength; the team has handled some of the country’s most significant telecoms disputes, which recently included Rapinnart Prongsiriwattana representing a Thai telecoms company in Administrative Court proceedings concerning certain questions of concessions, public-private law and contract law. Elsewhere, Warathorn Wongsawangsiri successfully defended an insurance company against a THB2.2bn claim by a company in the automotive sector. Other specialisms in the department include corporate criminal defence involving corporate governance and securities law; Sakchai Limsiripothong, who is one of the firm’s leading litigators, is a key contact in this space. Practice head Phisit Dejchaiyasak is well-versed in high-profile litigation and arbitration, and Pathorn Towongchuen has a broad dispute resolution practice that includes administrative law, bankruptcy and debt restructuring.

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Dispute resolution: international arbitration

Within: Dispute resolution: international arbitration

Weerawong, Chinnavat & Partners is by any measure a go-to firm for domestic litigation, and also maintains a busy international arbitration practice. With particular experience in Singapore, South Korea and Switzerland, the team regularly works with leading international firms to represent Thai and multinational clients. In addition, it has a solid track record in the enforcement of foreign arbitral awards in Thailand; in recent work, the team assisted a Macau-based company with the enforcement of an SIAC award. Warathorn Wongsawangsiri is one of the key names to note for international arbitration; he is currently representing several clients before the SIAC and HKIAC. The wider dispute resolution team is led by Phisit Dejchaiyasak.

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