He is the managing partner of the global firm’s Bangkok branch
The International Bar Association’s class actions committee has named Warathorn Wongsawangsiri, Bangkok managing partner at global firm Herbert Smith Freehills Kramer, as its publications officer for the 2026-2027 term.
Wongsawangsiri is the sole Thailand-based representative on the committee. In a statement, he described the appointment as a “privilege” that would enable him to help strengthen “global understanding of class action laws and procedures.”
He leads HSF Kramer’s Bangkok disputes practice and has been a litigator for over 20 years. He has tackled complex commercial, administrative, construction and class action disputes.
Wongsawangsiri’s clients include major corporations and conglomerates. He has advised on Thai court litigation, domestic and international arbitration, and mediation.
Moreover, he has handled matters involving administrative law, bankruptcy and rehabilitation, corporate and commercial, corporate governance, director liability, corporate investigations, compliance, concessions, and product liability. He has operated across the aviation, banks and financial institutions, construction and engineering, concessions, consumer, energy, government and public sector, healthcare, hospitality and real estate, insurance, transportation and logistics, and TMT industries.
Wongsawangsiri is a facilitator at the Thai Institute of Directors. He has also been appointed as sole and co-arbitrator by the SIAC, THAC, TAI, and YSIAC.
The IBA class actions committee is co-chaired by Machado Meyer Advogados’ Glaucia Coelho (Brazil) and Legance’s Daria Pastore (Italy). Innsworth Advisors Limited’s Amel Fenghour (London) is vice chair.
The other officers are as follows:
The IBA class actions committee is a platform through which lawyers can discuss class action and collective redress regimes, track global developments, and examine significant policy and rule of law concerns.
