Bangkok’s legal market is highly competitive and sophisticated, offering world-class expertise to global businesses, investors, and high-net-worth individuals. The top-rated law firms in 2025 are consistently recognized for their transactional excellence, regulatory mastery, and specialized support in high-demand sectors like corporate M&A and real estate.
The leading firms are categorized below based on their primary market strength:
Tier 1: Corporate, Investment & Finance Leaders
These firms are consistently ranked in the highest bands by international legal directories (Chambers, Legal 500, IFLR1000) for handling the largest and most complex transactions.
| Firm Name | Core Expertise | Key Strength for International Clients |
| Baker McKenzie | M&A, Banking & Finance, Tax, Real Estate, Global Compliance. | Global Integration: Unmatched resources and a seamless, multi-jurisdictional approach, making them the default choice for global conglomerates. |
| A&O Shearman | Capital Markets, High-Value M&A, Private Equity, Project Finance. | Financial Excellence: Elite expertise in complex capital markets, financing structures, and high-stakes corporate restructuring. |
| Tilleke & Gibbins | Corporate/M&A, Intellectual Property (IP), Regulatory Compliance, FDI. | Regional Authority: Deepest local and regional expertise, vital for navigating the Foreign Business Act (FBA) and maximizing BOI privileges. |
| Linklaters | Capital Markets, M&A, Banking & Finance, Joint Ventures. | Transactional Focus: Renowned for sophisticated advisory on high-value inbound and outbound M&A and capital markets deals, leveraging a powerful international network. |
| Chandler MHM | Project Finance, Energy & Infrastructure, Corporate Real Estate. | Sector Specialization: Market leaders in regulated sectors, providing specialized advice for large capital projects, particularly for energy and infrastructure investment. |
Tier 2: Real Estate, Litigation & Dedicated Support
These firms offer high-quality, specialized services essential for successful market entry, real estate development, and support for the expatriate community.
Dedicated Real Estate & Property Advisory
- Blumenthal Richter & Sumet (BRS): Highly active in advising developers, private equity investors, and high-net-worth individuals on the acquisition and development of hotels, resorts, and retail properties.
- Kudun and Partners: A dynamic independent Thai firm recognized for its strong real estate practice, advising on mid-market acquisitions, joint ventures, and financing in the hospitality and residential sectors.
Expatriate & SME Full-Service
- Siam Legal International: The most recognized full-service firm for the expat community. They offer transparent, reliable services for Immigration (Visas, Work Permits, LTR), Property Due Diligence, and SME corporate setup (e.g., Treaty of Amity applications).
- Weerawong C&P: An experienced independent firm that consistently handles complex M&A, private equity investments, and high-stakes litigation, often working for leading Thai and international clients.