The Bangkok legal market offers world-class services, with leading firms specializing in either large corporate transactions or dedicated support for the significant expat and entrepreneur community. Your “best” firm depends on whether you’re setting up a major investment or seeking reliable visa and property assistance.
Here are the top 5 trusted legal service providers in Bangkok, categorized by their primary expertise for 2025:
Top Tier: Corporate & Business Law
These firms are renowned for handling complex, high-value corporate structuring, regulatory compliance, and litigation for multinational companies.
1. Tilleke & Gibbins
- Expertise: Corporate/M&A, Intellectual Property (IP), and Litigation/Dispute Resolution.
- Trust Factor: Consistently ranked as the top regional firm in multiple 2025 legal guides (Chambers, The Legal 500). They have an unparalleled depth of expertise in Thai and regional law.
- Best For: Large foreign investors, companies needing BOI Promotion, or those involved in high-stakes commercial disputes or IP protection.
2. Baker McKenzie
- Expertise: Large-Scale M&A, Tax, Global Compliance, and Banking & Finance.
- Trust Factor: One of the world’s largest law firms, its Bangkok office is a top choice for major global conglomerates due to its integrated global network and deep local market penetration.
- Best For: Multinational corporations requiring seamless, multi-jurisdictional legal support and expertise in complex tax and financial structuring.
3. Chandler MHM (formerly Chandler and Thong-Ek)
- Expertise: Project Finance, Energy & Infrastructure, and Highly Regulated Sectors.
- Trust Factor: A long-established, top-ranked firm known for its expertise in large-scale project financing and navigating high-level regulatory issues, especially in infrastructure and energy.
- Best For: Businesses involved in major infrastructure projects or those requiring deep regulatory and financing expertise.
Specialist Tier: Expat & SME Solutions
These firms are highly recommended for individuals, families, and small-to-medium foreign-owned enterprises needing accessible, clear assistance with personal and business setup needs.
4. Siam Legal International
- Expertise: Personal Immigration (Visas & Work Permits), Property Law, and Family Law.
- Trust Factor: Highly visible and established firm dedicated to the expat community, offering transparent, fixed-fee services for essential personal legal needs.
- Best For: Retirement Visa (O-A), LTR Visa, Marriage Visa applications, and crucial Property Due Diligence (verifying title deeds and ensuring foreign quota compliance).
5. Kudun and Partners
- Expertise: Mid-Market M&A, Real Estate Development, and Start-up/Fintech Advisory.
- Trust Factor: An emerging, highly-rated independent Thai firm with a dynamic and responsive approach. They are recognized for their work in Capital Markets and advising new economy companies.
- Best For: Foreign entrepreneurs, SMEs, and Fintech companies seeking a modern, client-focused firm for corporate setup and funding advice.
