⚖️ Top Legal Services in Bangkok (2025): Best Lawyers for Every Client
The top legal services in Bangkok fall into two distinct categories: Tier 1 firms that dominate large corporate and financial transactions, and Specialist firms that focus on the high-demand needs of the expatriate community in visa and property law.
Here are the top 5 firms, based on their 2025 rankings and specialized expertise:
Tier 1: Corporate, M&A, and Finance Leaders
These firms are consistently ranked in the highest bands by international legal directories (Chambers and The Legal 500) for their work with multinational corporations and complex financial deals.
1. Baker McKenzie
- Core Expertise: Large-Scale M&A, Tax, Banking & Finance, and Global Compliance.
- Why They Lead: The Bangkok office is a crucial hub in one of the world’s largest law firms. They are a Band 1 firm for Corporate/M&A and are the go-to firm for complex cross-border transactions and global compliance requirements.
- Best For: Global conglomerates and major international investors requiring integrated legal support across multiple jurisdictions.
2. Tilleke & Gibbins
- Core Expertise: Corporate/M&A, Intellectual Property (IP), and Litigation/Dispute Resolution.
- Why They Lead: Recognized as a premier regional firm with over a century of history in Thailand. They hold top rankings across numerous practice areas and were named Regional Litigation Firm of the Year at the 2025 ALB SE Asia Law Awards.
- Best For: Foreign investors seeking advice on the Foreign Business Act (FBA), BOI Promotion, or robust protection for their Intellectual Property assets.
3. A&O Shearman (formerly Allen & Overy)
- Core Expertise: Corporate/M&A, Joint Ventures, Private Equity, and Capital Markets.
- Why They Lead: Consistently ranked in Band 1 for Corporate/M&A, A&O Shearman maintains an outstanding transactional practice bolstered by its strong international network. They are highly active on high-value inbound and outbound deals.
- Best For: High-value corporate restructurings, private equity funds, and cross-border M&A where leveraging a global network is paramount.
Specialist Tier: Expat, Visa, and Real Estate Protection
These firms provide reliable, transparent, and dedicated legal services essential for foreigners living, working, and investing in Thailand.
4. Siam Legal International
- Core Expertise: Personal Immigration (Visas), Property Law, and Family Law.
- Why They are Trusted: They are a premier full-service firm dedicated to the expat community, offering clear and accessible legal support for individuals. They are consistently recommended for their expertise in bridging Thai bureaucracy and international requirements.
- Best For: Individuals applying for Retirement (O-A), LTR, or Marriage Visas, Property Due Diligence for condominium purchases, and family law matters like divorce or wills.
5. Chandler MHM (Chandler Mori Hamada)
- Core Expertise: Project Finance, Energy & Infrastructure, and Real Estate (Corporate Transactions).
- Why They are Trusted: Although also serving large corporations, this firm is consistently Highly Recommended for its deep knowledge in key areas like Real Estate related to corporate acquisitions and is a leading firm in the Energy sector.
- Best For: Businesses involved in large real estate development projects or companies requiring financing expertise for major infrastructure investments.
