PREMIER LAW FIRM IN THAILAND

Global Standards. Local Expertise. Proven Results.

Trusted for corporate, property, family, immigration, and litigation services across Thailand.

Inside Siam Legal

Meet our team and see how we turn complex legal matters into clear, confident outcomes.

1,200+

Cases Defended

3,650+

Clients Served

500M

Baht Claims Won

22+

Years of Experience

Legal

Full-service counsel for contracts, compliance, and cross-border transactions.

Immigration

Visas, residency, and citizenship solutions handled end-to-end.

Family

Marriage, custody, adoption, and inheritance guidance with care and precision.

Business

Company registration, BOI, and licensing for foreign and Thai enterprises.

Litigation

Civil, criminal, and commercial representation from strategy to verdict.

Property

Real estate due diligence, contracts, and ownership for local and foreign clients.

Why Clients Worldwide
Trust Siam Legal

Siam Legal is a full-service law firm serving individuals, families, and corporations throughout Thailand and abroad. For over two decades, our attorneys have provided trusted counsel in immigration, corporate and commercial law, property, family matters, litigation, and emerging areas such as cybersecurity and data protection.

With offices in Bangkok, Chiang Mai, Phuket, and Pattaya, we combine international standards with local expertise to deliver clear, results-driven legal solutions.

Immigration & Visa Services
Corporate & Commercial Law
Litigation & Dispute Resolution
Property, Family & Estate Law

Litigation and
Legal Services

Siam Legal’s litigation team provides trusted representation in Thailand’s civil, criminal, cybercrime, and cross-border matters. With decades of experience, our attorneys deliver strategic, results-driven advocacy for both local and international clients across a wide range of legal disputes.

Civil Cases

Contract disputes, debt recovery, personal injury, and malpractice handled with strategic precision.

Criminal Cases

Defense and prosecution for fraud, extradition, narcotics, and white-collar offenses.

Dispute Resolutions

Commercial, labor, and IP conflicts resolved through mediation or arbitration.

Legal Services

Wills, notarization, power of attorney, and investigative support under one trusted firm.

Cybercrimes

Legal support for online fraud, data theft, and digital threats affecting individuals.

International Desk

Trusted legal support for international clients navigating Thailand’s laws and systems.

Marriage in Thailand

We handle registration, translation, and legalization so your marriage is valid in Thailand and recognized abroad.

Prenuptial Agreement

Our lawyers draft and register prenuptial agreements that protect assets and meet Thai and international standards.

Adoption In Thailand

We guide families through domestic and international adoptions with full legal compliance at every stage.

Divorce In Thailand

We manage both contested and uncontested divorces, including custody, support, and property division.

Child Legitimation

We assist with legal recognition of paternity through registration, marriage, or court order.

Thailand Divorce Lawyer

Our experienced family lawyers represent clients in complex Thai divorce and custody disputes.

Company Registration

We provide company registration service pertaining to incorporation of a company limited both Thai-majority and foreign-majority shareholding. It als

BOI Thailand

Our service for application of Board of Investment (BOI) promotion caters to the needs of both local and foreign investors who seek to have their various

Treaty of Amity

We assist US nationals and corporate entities establish their business presence in Thailand through the US-Thai Treaty of Amity. Our service includ

Tax Services

Applications for Foreign Business Licence (FBL) is a requirement for every foreign corporate entity registered under Thai law. The Foreign Business Act

Property Law

Buying property in Thailand as a foreigner requires careful legal planning. Our attorneys handle every stage of the process – from due diligence and contract review to title transfer – ensuring your investment is compliant, protected, and secure.

Beyond transactional work, we provide legal advice on ownership structures, land leases, condominium purchases, and property inheritance, helping clients avoid common pitfalls and safeguard their long-term interests.

Due Diligence

Title Search

Contract Review

Transfer of Title

Thailand Visa

Comprehensive visa support for tourism, retirement, marriage, and business stays in Thailand.

U.S. Visa

Legal assistance for U.S. tourist, fiancé, marriage, and business visa applications.

U.K. Visa

Expert guidance for visitor, spouse, student, and business visas to the United Kingdom.

Canadian Visa

Professional support for Canadian visitor, work, and family sponsorship visas.

Australian Visa

Visa assistance for tourism, work, study, and partner migration to Australia.

Schengen Visa

End-to-end help securing Schengen visas for short- or long-term travel across Europe.

Thailand Elite Visa

The Thailand Elite Visa offers a secure, long-term residence option for investors, professionals, and frequent visitors who value comfort and convenience. As an authorized partner, Siam Legal guides applicants through the full membership process with precision, transparency, and trusted expertise.

Chompu W 8 months ago

★★★★★

I had an excellent experience with Siam Legal International (Bangkok Office), the team was professional, knowledgeable and always responsive. They guided me through every steps with clarity and confidence, and I truly felt supported throughout the entire process. Highly recommended. Thank you Khun Tan and Khun Atom.

Keith Robins 7 months ago

★★★★★

I contacted Siam Legal International for legal assistance with a probate matter. I had the pleasure of Jean looking after my case and she was absolutely superb. Very quick to respond and understood the issues i was having in the UK and what was required to sort it. From initial contact to document drafted was very quick, I can't praise her enough. Thankyou Jean

Nicolas Normann 7 months ago

★★★★★

Siam Legal has been very kind and professional. Khun Kittisak and Khun Jaipare provided me with free legal advice and guided me with great care. I truly appreciate their support and will definitely choose Siam Legal to represent me in the future if needed. Highly recommended

Where_is_JT a month ago

★★★★★

Siam Legal made my DTV Visa process incredibly smooth and stress-free. Based in Bangkok, their team handled everything quickly and efficiently, leaving nothing to chance. A special mention to Kanda, who was absolutely fantastic — knowledgeable, helpful, and a pleasure to work with. If you’re going through the process, definitely ask for her by name. Communication throughout was flawless. I was always kept in the loop and never left wondering what the next step was. From start to finish, my experience was a 10 out of 10. If you’re looking to get a visa sorted in Bangkok, I would highly recommend Siam Legal without hesitation.

Tuong Nguyen 4 months ago

★★★★★

I recently worked with K Tan and K Chertam at Siam Legal for my marriage certificate in Thailand, and I couldn't be more impressed! From the initial consultation to the final approval, they made the entire process seamless and stress-free. K Tan was incredibly knowledgeable about the latest visa regulations and guided me through every step with clear explanations, handled all the paperwork efficiently and kept me updated promptly via email and calls while K Chertam ensured the whole process at the District seamlessly. Their professionalism, patience, and genuine care turned what could have been a daunting experience into a smooth one. I highly recommend Siam Legal, especially K Tan and K Chertam, to anyone needing immigration help in Thailand—5 stars all the way!

Angus Houston a month ago

★★★★★

Siam Legal made the process of acquiring a Thailand elite visa very smooth and stress free. Rex was a great help in answering any questions I had and organizing to have the visa affixed during transit with short notice. I highly recommend Siam Legal if you wish to purchase the elite visa.

Benny Pranata 5 months ago

★★★★★

I had a great experience with Siam Legal International. From the very beginning, I was assisted and well-informed by Jess and Patricia. They were patient, knowledgeable, and thorough in guiding me through the process of gathering all the required documents. Whenever I needed guidance or clarification on any step of the process, they were there to provide clear instructions and support, ensuring everything was done correctly until my Elite Visa was successfully granted. I highly recommend Siam Legal International for anyone needing assistance with immigration matters. They are professional, knowledgeable, and will make the whole process much easier — you won’t be disappointed!

Russell Rein 4 months ago

★★★★★

I had an exceptional experience with Siam Legal International, from the very first consultation, through the detailed technicalities of securing a foreigner-to-foreigner divorce, to the patience and clarity they provided throughout this more complex process. I would like to express my sincere gratitude to Khun Natvarin for her guidance, sound advice, and steady professionalism during what was, personally, a very challenging period. Her deep understanding of family law and the intricacies of international divorce, especially under a complicated settlement agreement, proved invaluable. My appreciation also extends to Khun Nisarat and Khun Nahatai, whose expertise and timely support further strengthened the entire process. I am truly grateful to have entrusted my case to Siam Legal International and to have been supported by such dedicated professionals

Ian Readman 5 months ago

★★★★★

I had an excellent experience with Siam Legal when purchasing my property in Phang Nga, especially from Khun Bam and the property team. She was incredibly thorough, professional, knowledgeable and went out of her way to make the process as smooth and as easy as possible. She even met me on a Saturday afternoon just before flying out of the country, and also attended land office meetings in my behalf. I would definitely use Siam Legal and Khun Bam for any property transaction in the future.

Morgan 4 months ago

★★★★★

We used Siam Legal to obtain our LTR (Long Term Resident) Visa and had a fantastic experience throughout the process. Niramon (Lotus) was our contact and handled everything in a timely and professional manner. She helped us understand the process and requirements at each step along the way in a friendly and patient manner. We appreciate all of your hard work getting us to the finish line! We highly recommend using Siam Legal to help minimize the stress, avoid any errors, resolve issues or complications, and make the experience as smooth and friendly as possible! We will definitely be using Siam Legal for any future legal needs such as rental agreements, condo purchases, and of course Visa renewals!

Phil Ring 3 months ago

★★★★★

My wife was approved for her US Tourist visa this week. It was our second attempt, and our first attempt with Siam Legal. Linda did a wonderful job of organizing the paperwork and preparing my wife for the interview. We can now visit my family in the US for the holiday season and my parents will get to meet their daughter-in-law for the first time. Thank you Linda! I highly recommend Siam Legal.

Todd Bancroft 5 months ago

★★★★★

Siam Legal recently helped secure LTV (P) & (O) Visas for myself and my partner. Their advice was professional, well considered and accurate. Khun Nawaporn in particular was instrumental in ensuring the process was efficient and smooth, including escorting us to both the BOI and the Department of Immigration to ensure smooth sailing. Highly recommended.

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Bangkok Office

Siam Legal International (Bangkok Office)

18th Floor, Unit 1806 Two Pacific Place, 142 Sukhumvit Rd, Khlong Toei, Bangkok 10110, Thailand

PHONE: +66 2 254 8900

MAPS & DIRECTION

Chiang Mai Office

Siam Legal - Chiang Mai

310 Maneenopparat Road, Icon Park Hotel Building, 2nd Floor, Room 224 Regus, Sriphoom, Mueang Chiang Mai, Chiang Mai 50200, Thailand

PHONE: +66 53 818 306

MAPS & DIRECTION

Phuket Office

Siam Legal (Phuket)

123 / 27-28 Moo 5, Bangtao Place, Cherngtalay, Thalang, Phuket, 83110, Thailand

PHONE: +66 76 326 322

MAPS & DIRECTION

Pattaya Office

Siam Legal (Pattaya)

44, 59 M.11 Sukhumvit Rd., Pattaya City, Bang Lamung District, Chon Buri 20150, Thailand

PHONE: +66 33 641 608

MAPS & DIRECTION

Siam Legal (Thailand) Co., Ltd. is a company registered in Thailand with registration number 0205549020881.
It is authorized and regulated by The Lawyers Council of Thailand with registered no. 13300/2569.

Global Standards. Local Expertise. Proven Results.

Inside Siam Legal

1,200+

3,650+

500M

22+

Corporate and Legal Services

Legal

Immigration

Family

Business

Litigation

Property

Why Clients Worldwide Trust Siam Legal

Litigation and Legal Services

Civil Cases

Criminal Cases

Dispute Resolutions

Legal Services

Cybercrimes

International Desk

Family Law

Marriage in Thailand

Prenuptial Agreement

Adoption In Thailand

Divorce In Thailand

Child Legitimation

Thailand Divorce Lawyer

Corporate Services

Company Registration

BOI Thailand

Treaty of Amity

Tax Services

Property Law

Due Diligence

Title Search

Contract Review

Transfer of Title

Meet Your Legal Team in Thailand

Dennis Ramm

Nisarat Suriyanang

Chiara Budelli

Apichart Mattayanuwat

Thanakan Chaiboon

Thanakrit Phattarakitichai

Julianna Ruben

Omar O Manee

Panuwat Krishnamara

Kittisak Sriparesri

Natvarin Kaewphitoon

Jaipare Vangpreecha

Mary Jean Kuda

Disanai Saengpetch

Pathit Russuwan

Korawan Sasiwilasakorn

Narongrat Khumsuwan

Mikkel Karlsen

Settawit Kun-au-dom

Tanwarat Lengnudam

Global Immigration and Visa Services

Thailand Visa

U.S. Visa

U.K. Visa

Canadian Visa

Australian Visa

Schengen Visa

Thailand Elite Visa

Bronze Membership

Gold Membership

Platinum Membership

Diamond Membership

Reserve Membership

Siam Legal International is a proud member of :

Recommended by :

Real Clients. Real Results.

Frequently Asked Questions

What is the legal basis of Arbitration in Thailand?

How do I refer a dispute for Arbitration?

Where in Thailand are Arbitration disputes usually filed?

Are interim remedies available during Arbitration Proceedings?

Why Clients Worldwide
Trust Siam Legal

Litigation and
Legal Services