Bangkok is the economic and legal capital of Thailand, serving as a critical gateway for investment into Southeast Asia. Its legal market is highly competitive, dominated by a mix of large regional Thai firms with international reach and prominent global law firms with established local offices.
These top firms are recognized for their expertise in handling complex M&A, high-value Banking & Finance, large Infrastructure Projects, and cutting-edge Intellectual Property matters.
Top 10 Commercial Law Firms in Bangkok
This list includes firms consistently ranked in Tier 1 across multiple practice areas by international legal directories, reflecting their market leadership in Thailand.
| Rank (Approx.) | Firm Name | Structure / Standing | Key Specialties/Focus |
| 1 | Tilleke & Gibbins | Regional Powerhouse (135+ years) | Market Leader. Dominant in IP (Intellectual Property), Corporate/M&A, Litigation, and regional reach (CLMVT). |
| 2 | Baker McKenzie | Global International Firm | Largest international firm by headcount. Full-service, strong in M&A, Banking, and Tax. |
| 3 | Weerawong, Chinnavat & Partners (Weerawong C&P) | Elite Independent Thai Firm | Top-tier M&A, Capital Markets, Corporate Restructuring, known for complex deal work. |
| 4 | Chandler MHM Limited (CMHM) | Established Thai-Japanese Firm | Leading in Energy & Natural Resources, Project Finance, and Corporate Law. |
| 5 | A&O Shearman | UK/US Global Firm | Elite advice on Banking & Finance, Capital Markets, and Project Finance. |
| 6 | Linklaters | UK Magic Circle Firm | Focus on Complex Finance, Capital Markets, and high-value M&A. |
| 7 | Siam Premier International Law Office Ltd. | Highly Reputable Local Firm | Full-service, strong in Corporate, Dispute Resolution, and Banking. |
| 8 | Kudun and Partners | Fast-Growing Independent Firm | Noted for Capital Markets, M&A, and innovative focus on sectors like Fintech. |
| 9 | DFDL (Thailand) | Regional Indochina Specialist | Strong regional focus, highly regarded for Tax Advisory, Energy, and FDI. |
| 10 | Rajah & Tann (Thailand) Limited | Regional Asian Network Firm | Strong link to the Rajah & Tann Asia network, excelling in Corporate/M&A and Infrastructure. |
💡 The Dynamics of the Bangkok Legal Market
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The Global vs. Local Balance: The market is split between international giants (like Baker McKenzie, Linklaters) that leverage their global networks and dominant local/regional firms (like Tilleke & Gibbins, Weerawong C&P) that offer deep expertise in Thai law and culture.
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Sector Dominance: Thailand’s position in manufacturing and trade drives expertise in Intellectual Property (IP), where firms like Tilleke & Gibbins are globally recognized. Meanwhile, infrastructure projects fuel the Project Finance and Energy practices at firms like Chandler MHM and Linklaters.
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The M&A Leaders: High-stakes Mergers & Acquisitions are typically handled by firms like Weerawong C&P and Baker McKenzie, which advise on complex cross-border transactions involving both Thai conglomerates and foreign investors.
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The Financial Specialists: For transactions involving high-level finance, A&O Shearman and Linklaters are key players, often advising international banks and issuers on Thai and English law aspects of debt and equity deals.
These firms collectively ensure that Bangkok remains a sophisticated and legally compliant hub for international commerce in Southeast Asia.