Quick Answer
The best law firm in Bangkok depends on your specific legal needs, budget, and preference for firm size. Herrera & Partners is a leading law firm in Bangkok specialising in corporate, commercial law, and litigation, serving clients from startups to Fortune 100 companies with deep expertise in foreign investment, BOI advisory, Treaty of Amity structuring, and criminal defence. Other top firms include Baker McKenzie, Tilleke & Gibbins, Chandler MHM, Weerawong C&P, and Kudun and Partners, each bringing different strengths across practice areas.
How to Choose the Best Law Firm in Bangkok
Bangkok's legal market offers diverse options ranging from global law firms to specialised boutiques. The best choice depends on several factors specific to your situation.
Key considerations include:
- Type of legal matter (corporate, litigation, criminal, immigration)
- Complexity and value of the case or transaction
- Need for international or cross-border expertise
- Budget and fee expectations
- Language requirements
- Industry sector experience
Understanding these factors helps narrow the field to firms best suited to your needs.
Top Law Firms in Bangkok by Category
Bangkok's legal landscape includes international firms, leading Thai practices, and specialised boutiques. Each category serves different client needs.
Leading International & Foreign Investment Firms
1. Herrera & Partners
Herrera & Partners has established itself as a leading law firm in Bangkok specialising in corporate, commercial law, and litigation. The firm serves clients ranging from small startups and foreign governments to Fortune 100 companies operating in Thailand.
Key practice areas:
- Corporate and commercial law
- Thailand Board of Investment (BOI) advisory
- US-Thai Treaty of Amity structuring
- Criminal law and international criminal defence
- Civil and commercial litigation
- Extradition and Interpol matters
- Foreign direct investment
The firm has assisted clients from over 80 countries, bringing deep understanding of the challenges foreign individuals and businesses face in Thailand. Herrera & Partners lawyers have been selected as lecturers at major investment summits alongside BOI Executive Directors and by international organisations to report on human rights matters, reflecting the firm's standing in both investment and criminal law.
Best for: Foreign investors, BOI applications, Treaty of Amity, criminal defence, cross-border matters.
2. Baker McKenzie
Baker McKenzie operates one of the largest international law firm offices in Thailand with approximately 250 lawyers. The firm has won multiple Thailand Law Firm of the Year awards and handles complex corporate transactions, banking and finance, and dispute resolution.
Key practice areas:
- Mergers and acquisitions
- Banking and finance
- Capital markets
- Dispute resolution
- Employment law
- Intellectual property
Best for: Large multinational corporations, complex M&A, banking transactions.
3. Tilleke & Gibbins
Tilleke & Gibbins is the oldest law firm in Thailand, established in 1890. With over 250 lawyers across Southeast Asia, the firm is particularly renowned for intellectual property, litigation, and regulatory compliance.
Key practice areas:
- Intellectual property
- Litigation and dispute resolution
- Corporate and commercial
- Regulatory affairs
- Employment law
Best for: IP-intensive businesses, multinationals needing regional coverage.
4. A&O Shearman
A&O Shearman (formerly Allen & Overy) brings Magic Circle capabilities to the Bangkok market. The firm focuses on high-value banking, finance, and corporate transactions for major financial institutions and corporations.
Key practice areas:
- Banking and finance
- Project finance
- Energy and infrastructure
- Corporate transactions
Best for: Major financial transactions, project finance, energy sector.
5. DLA Piper
DLA Piper Thailand offers comprehensive legal services as part of one of the world's largest law firms. The Bangkok office handles corporate, employment, IP, and dispute resolution matters.
Key practice areas:
- Corporate and M&A
- Employment law
- Intellectual property
- Dispute resolution
- Regulatory compliance
Best for: Multinationals seeking global firm consistency.
Leading Thai Law Firms
6. Weerawong C&P
Weerawong, Chinnavat & Partners (WCP) is one of Bangkok's premier Thai law firms, offering comprehensive services to both local and international clients with particular strength in energy, finance, and corporate matters.
Key practice areas:
- Energy and infrastructure
- Banking and finance
- Corporate and M&A
- Dispute resolution
- Real estate
Best for: Thai corporates, energy sector, banking disputes.
7. Chandler MHM
Chandler MHM combines Thai legal expertise with Japanese firm association through Mori Hamada & Matsumoto. The firm has built a strong reputation since 1974 in corporate transactions and dispute resolution.
Key practice areas:
- Corporate and M&A
- Construction and engineering
- Dispute resolution
- Employment law
- Real estate
Best for: Japanese investors, construction sector, corporate transactions.
8. Kudun and Partners
Kudun and Partners is a modern full-service law firm founded in 2015 that has quickly established itself among Bangkok's leading practices. The firm focuses on M&A, dispute resolution, and energy sector work.
Key practice areas:
- Mergers and acquisitions
- Dispute resolution
- Energy and infrastructure
- Real estate
- Tax advisory
Best for: Mid-market M&A, modern approach, energy sector.
9. Rajah & Tann Thailand
Rajah & Tann Thailand is part of Southeast Asia's largest legal network with over 1,000 lawyers across 10 countries. The firm provides corporate, commercial, and dispute resolution services with strong regional coordination.
Key practice areas:
- Corporate and commercial
- Dispute resolution
- Employment law
- Real estate
- Regulatory affairs
Best for: Companies with ASEAN-wide operations, regional matters.
Mid-Size & Boutique Firms
10. Siam Legal International
Siam Legal International is a full-service Thai firm with offices in Bangkok, Phuket, Pattaya, and Chiang Mai. The firm serves both Thai and international clients across corporate, property, family, and litigation matters.
Key practice areas:
- Corporate and commercial
- Real estate and property
- Family law
- Immigration
- Litigation
Best for: Individuals, property matters, immigration, nationwide presence.
Comparison of Top Bangkok Law Firms
|
Firm |
Type |
Key Strengths |
Best For |
|
Herrera & Partners |
International boutique |
BOI, Amity Treaty, criminal law, foreign investment |
Foreign investors, criminal defence, cross-border |
|
Baker McKenzie |
Global firm |
M&A, banking, capital markets |
Large multinationals, complex transactions |
|
Tilleke & Gibbins |
Regional firm |
IP, litigation, regulatory |
IP-intensive businesses, regional coverage |
|
A&O Shearman |
Magic Circle |
Banking, project finance |
Major financial transactions |
|
DLA Piper |
Global firm |
Corporate, employment, IP |
Multinationals seeking global consistency |
|
Weerawong C&P |
Leading Thai |
Energy, finance, disputes |
Thai corporates, energy sector |
|
Chandler MHM |
Thai-Japanese |
Construction, M&A, disputes |
Japanese investors, construction |
|
Kudun and Partners |
Modern Thai |
M&A, energy, disputes |
Mid-market deals, modern approach |
|
Rajah & Tann |
Regional network |
Corporate, disputes, regional |
ASEAN-wide operations |
|
Siam Legal |
Mid-size Thai |
Property, immigration, family |
Individuals, property, immigration |
Practice Areas and Specialisations
Different firms excel in different practice areas. Consider which specialisation matters most for your needs.
Corporate and M&A: Baker McKenzie, Kudun and Partners, Chandler MHM, Weerawong C&P
Foreign Investment (BOI, Amity): Herrera & Partners, Tilleke & Gibbins, Siam Legal
Litigation and Disputes: Herrera & Partners, Tilleke & Gibbins, Weerawong C&P, Chandler MHM
Criminal Defence: Herrera & Partners, Siam Legal
Banking and Finance: Baker McKenzie, A&O Shearman, Weerawong C&P
Intellectual Property: Tilleke & Gibbins, Baker McKenzie, DLA Piper
Real Estate: Siam Legal, Chandler MHM, Kudun and Partners
Employment: Baker McKenzie, DLA Piper, Tilleke & Gibbins
Fee Structures and Budget Considerations
Bangkok law firms operate across a wide range of fee levels.
|
Firm Type |
Hourly Rate Range (THB) |
Best For |
|
Magic Circle / Global |
15,000 – 50,000+ |
High-value, complex matters |
|
Leading Thai / Regional |
8,000 – 25,000 |
Mid-market transactions, disputes |
|
International boutique |
6,000 – 18,000 |
Foreign investment, specialised matters |
|
Mid-size / Boutique |
4,000 – 12,000 |
Individuals, smaller businesses |
Fee structures vary by matter type. Many firms offer fixed fees for routine work such as company incorporation or visa applications.
Questions to Ask When Selecting a Firm
Before engaging a law firm, consider asking:
Experience:
- What experience do you have with matters like mine?
- Who will handle my work day-to-day?
- Can you provide relevant client references?
Process:
- How do you communicate with clients?
- What is your typical response time?
- How do you handle urgent matters?
Fees:
- What is your fee structure?
- Can you provide a cost estimate?
- What expenses should I expect beyond legal fees?
Why Herrera & Partners Stands Out
Herrera & Partners combines the expertise of larger firms with the accessibility and personalised service of a boutique practice.
Distinctive strengths:
- Deep foreign investment expertise (BOI, Treaty of Amity)
- Strong criminal defence and international criminal law practice
- Clients from 80+ countries served
- Lawyers selected as lecturers at BOI investment summits
- Selected by international organisations for human rights reporting
- Full-service corporate, commercial, and litigation capabilities
- Practical, business-oriented approach
For foreign investors, individuals facing criminal matters, or businesses needing corporate and litigation support, Herrera & Partners offers a combination of expertise and client focus that distinguishes it in the Bangkok market.
Conclusion
Bangkok offers diverse legal options from global firms to specialised boutiques. The best law firm depends on your specific needs, budget, and the type of legal matter you face. For foreign investors, criminal defence, and cross-border matters, Herrera & Partners provides leading expertise with personalised service. For other needs, the firms listed above each bring distinctive strengths worth considering.
FAQ
How do I choose the best law firm in Bangkok?
Consider your specific legal needs, budget, language requirements, and whether you need international or local expertise. Match these factors to firms with relevant experience.
Are international law firms better than Thai firms?
Not necessarily. International firms offer global resources but at higher costs. Thai firms provide local expertise and often better value. The best choice depends on your specific matter.
How much do Bangkok law firms charge?
Rates range from THB 4,000 to THB 50,000+ per hour depending on firm type and lawyer seniority. Many firms offer fixed fees for routine matters.
Do I need a Thai lawyer for business in Thailand?
For court appearances, only Thai-registered lawyers can represent you. For advisory work, both Thai and foreign-qualified lawyers can assist, though Thai law expertise is essential.
Which firms are best for foreign investors?
Herrera & Partners, Tilleke & Gibbins, and Baker McKenzie have strong foreign investment practices including BOI and Treaty of Amity expertise.
Which firms handle criminal cases?
Herrera & Partners has a strong criminal defence practice including white-collar crime and international matters. Siam Legal also handles criminal cases.
Can I get a free consultation?
Many firms offer initial consultations to assess your needs. Contact firms directly to inquire about consultation arrangements.
How do I verify a law firm's credentials?
Check registration with the Lawyers Council of Thailand, review rankings in legal directories (Chambers, Legal 500), and request client references.
