Reviewed by ThaiLawOnline, a licensed Thai law firm practising in Thailand since 2006. Thai lawyer of record: Wichuda Atthamethakon, LL.M., Thai Bar Licence 3149/2556.
Last updated on August 14, 2026
Sebastien H. Brousseau, LL.B., B.Sc., is a French-Canadian legal professional and the founder of ThaiLawOnline.com, one of the first online Thai legal services for foreigners, operating since 2006. He has lived in Thailand since April 2004 and is a Thai permanent resident, a status granted to fewer than one hundred applicants per nationality each year.
Educated at the Universite de Montreal (LL.B. and B.Sc., with diplomas in political science and criminology) and at the Ecole du Barreau du Quebec, he was admitted to the Barreau du Quebec in 2007 and is a member of the International Bar Association. Before moving to Asia he worked in criminal defense and civil litigation in Montreal, training under leading defense counsel, and co-authored a reference book on the rights of incarcerated persons (2002) that is held in the library of the Supreme Court of Canada.
In Thailand, he founded Isaan Lawyers in Nakhon Ratchasima in 2007 (sold in 2022) and managed a branch office for one of the country’s largest expat law firms. Through ThaiLawOnline he has supervised more than 5,000 client matters in family law, property, wills and succession, corporate and immigration law, always alongside licensed Thai lawyers, including Khun Wichuda Atthamethakon, the firm’s Thai lawyer of record.
In 2019 he led the petition against the TM30 reporting rules that gathered more than 7,000 signatures, spoke at the Foreign Correspondents’ Club of Thailand alongside senior Immigration officials, and was quoted in the Bangkok Post: “the law must be logical, rational, efficient.” The rule was substantially relaxed in 2020. In 2012 the Canadian Ambassador to Thailand thanked him in writing for his work defending Canadians abroad. He also directed the first bilingual annotated editions of the Thai Civil and Commercial Code and the Thai Penal Code.
An early adopter of technology (online since 1992), he now builds the firm’s AI systems, including a research database of more than 84,000 Thai Supreme Court decisions. He works in English, French and Thai. Outside the law, he writes about travel and life in Thailand at sebastienbrousseau.com.
See also our full guide: property guide for foreigners in Thailand.
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