We provide legal services to Thai nationals and foreigners in need representation for private, business, and/or investment matters. With our experience and contacts, we can help meet all of your needs from wherever you are in Isaan, and no matter where you come from. The staff at Isaan Lawyers is comprised of foreign and Thai lawyers who are all able to serve you in English. We always work as a team, with each member adding their experience and knowledge to our Law firm.

Mr Sebastian H. Brousseau is Canadian. He completed his bachelor degree of Law in Canada (LLB). He completed a second bachelor degree (BSc) with a specialization in Political Science and Criminology. He was admitted to the Bar of Quebec. Mr Brousseau worked for several law firms in Thailand and Canada. He started to work for his first Law firm around 1993-94 while a student at Montreal University. He studied both Civil and Common Law. He is the managing director of Isaan Lawyers since 2007. Mr Brousseau is also a current member of the International Bar Association (IBA) and participated to Lawyers Without Borders. He devoted many years of his life to charity organisations and volunteer work. He is a lifetime member of Club Canada Thailand. Mr Brousseau is fluent in several languages. He is married to a Thai woman and has permanent residency in Thailand. You can see his full profile on Linkedin here.

Wichuda Atthamethakon

Thai Attorney and Notary

Ms Wichuda Atthamethakon (“Khun Cha” or “Cha”) graduated from Rajabhat University in Law in 2010. She is a registered Thai attorney and notary, license 3149/2556. She also did a master degree in Law and became a barrister in 2019, the highest rank for a Thai lawyer. She has been employed by Isaan Lawyers since 2012.

Nathaon Sattanusorn


Ms Nathaon Sattanusorn (“Khun Nat”) has a bachelor degree in management and finance. She is the personal assistant of Mr Brousseau and speak several languages like Thai, English, Mandarin, Cantonese and Laos. She serves as interpreter in Court, translate documents and prepare files for our office.”

Khun Morn

“Amornrat Khunpetch” or “Morn” graduated with a bachelor’s degree in law and she is a registered Thai attorney. Morn can speak both Thai and English. She has been working with Isaan Lawyers since 2015.

Tookta Yuttatong

Miss Tookta Yuttatong (“Took”) graduated with a bachelor degree in accounting from Rajabhat University. She has attended some training in tax workshop and Express (accounting system that our office use). She is also an approved member of the Federation of Accounting Profession. Took is constantly attending refresher courses in accounting to stay up to date with Thai accounting laws.

Siriluk Panchuen

Miss Siriluk joined Isaan Lawyers in 2018 as paralegal. She has a degree in Law from Rajabhat university in Nakhon Ratchasima and is currently doing her tests to become a registered lawyer in Thailand.

Depending on the needs of clients, Isaan Lawyers works with several other members in good standing of the Thai Lawyers’ Council or registered members of foreign bar associations. On top of that, since our foundation in 2006, we have also worked with registered attorneys from the bars of Quebec, Australia, United States, France, Ireland, Belgium, Italy, Germany, India, Hong Kong, Canada and many others.

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