Company lists · Data refreshed September 2026

Top 25 Foreign investment law firms based in Thailand

Name: Foreign investment law firms based in Thailand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 111 companies tracked

RevenueBase identified 111 foreign investment law firms headquartered in Thailand as of September 2026 and tracks 1,200 professional contacts across them, including 346 with verified work emails. Bangkok is the largest hub.

This list covers foreign investment law firms headquartered in Thailand, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

111Companies

1,200Contacts tracked

346Verified emails

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The 25 largest foreign investment law firms based in Thailand

Ranked by team size

Top 25 of 111 foreign investment law firms based in Thailand, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to foreign investment law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Baker Mckenzie Thailand	Partial evidence	195 One Bangkok Tower 4, ThailandHQ checked Sep 28, 2026	201-500	126 contacts →
	Partial evidence “As the largest and most prominent international law firm in Thailand, we advise clients on a full range of corporate legal services spanning over 40 years.” Source: RevenueBase Database · checked Sep 28, 2026
2	Kudun And Partners	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	51-200	84 contacts →
	Partial evidence “Kudun and Partners is one of Thailand’s leading and award-winning independent law firms, consecutively recognized as Thailand Law Firm of the Year by The Legal 500 Southeast Asia…” Source: RevenueBase Database · checked Sep 28, 2026
3	SCL Nishimura & Asahi Limited	Indirect evidence	Bangkok, ThailandHQ checked Sep 28, 2026	501-1,000	76 contacts →
	Indirect evidence “Nishimura & Asahi has five offices in Japan, as well as offices in Bangkok, Shanghai, Dubai, Frankfurt/Düsseldorf, Hanoi, Ho Chi Minh City, Jakarta, Kuala Lumpur, Manila, New…” Source: RevenueBase Database · checked Sep 28, 2026
4	Siam Premier International LAW Office Limited	Strong evidence	Pathumwan, ThailandHQ checked Sep 28, 2026	51-200	73 contacts →
	Strong evidence “Siam Premier is a leading independent Thai law firm, advising foreign and local clients on the full spectrum of domestic and cross-border corporate transactions, major projects…” Source: RevenueBase Database · checked Sep 28, 2026
5	Juslaws And Consult International LAW Firm	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	51-200	44 contacts →
	Partial evidence “Juslaws & Consult was founded in 2004 in Bangkok, recognizing the need to build up a law firm that not just would provide legal services but would become a reliable key partner…” Source: RevenueBase Database · checked Sep 28, 2026
6	Frank Legal & TAX	Strong evidence	Pathumwan, ThailandHQ checked Sep 28, 2026	11-50	26 contacts →
	Strong evidence “FRANK Legal & Tax is a boutique international law firm with offices in Bangkok and Phuket, providing tailored legal and tax advisory services to foreign investors, international…” Source: RevenueBase Database · checked Sep 28, 2026
7	Thanathip & Partners	Strong evidence	Lumphini, ThailandHQ checked Sep 28, 2026	11-50	26 contacts →
	Strong evidence “Thanathip & Partners is a highly specialised law firm in the areas of M&A, corporate finance, capital markets, foreign direct investment, banking and finance, securities and…” Source: RevenueBase Database · checked Sep 28, 2026
8	The Capital LAW Office Limited	Partial evidence	Bang Rak, ThailandHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “The Capital Law Office is a respected law firm with unique strengths, founded in 2013 by a legal team with more than 20 years’ experience.” Source: RevenueBase Database · checked Sep 28, 2026
9	Ilawasia Co., LTD	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	51-200	25 contacts →
	Partial evidence “ILAWASIA is a new-gen, full-service, Thai law firm based in central Bangkok.” Source: RevenueBase Database · checked Sep 28, 2026
10	DRKI	Indirect evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “To implement this philosophy, Dr.” Source: RevenueBase Database · checked Sep 28, 2026
11	Pisut & Partners	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Pisut & Partners is a leading law firm based in Bangkok having profound connections with international law firms across the region and other continents.” Source: RevenueBase Database · checked Sep 28, 2026
12	Benoit & Partners	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	23 contacts →
	Partial evidence “Benoit & Partners, founded in 2022, is a leading international law firm headquartered in Thailand.” Source: RevenueBase Database · checked Sep 28, 2026
13	SRPP	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	18 contacts →
	Partial evidence “SRPP is an independent national law firm with a proven reputation for providing progressive, industry-leading legal, regulatory and government relations advice to our clients…” Source: RevenueBase Database · checked Sep 28, 2026
14	Blumenthal Richter & Sumet	Indirect evidence	Bangkok, ThailandHQ checked Sep 28, 2026	51-200	16 contacts →
	Indirect evidence “Blumenthal Richter & Sumet, Attorneys & Legal Counselors Blumenthal Richter & Sumet assists clients to make confident business decisions.” Source: RevenueBase Database · checked Sep 28, 2026
15	Lawplus LTD	Indirect evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “LawPlus provides quality legal services to leading international, regional and local corporate clients.” Source: RevenueBase Database · checked Sep 28, 2026
16	Luther Thailand	Partial evidence	Sathorn, ThailandHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Luther is one of the top addresses among commercial law firms in Germany.” Source: RevenueBase Database · checked Sep 28, 2026
17	Strategy613	Indirect evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Strategy613 is an advisory firm focused on providing effective, innovative and customised solutions for our clients.” Source: RevenueBase Database · checked Sep 28, 2026
18	IAS Advisory Attorneys At LAW	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “IAS Advisory is a Bangkok-based international law firm that offers bespoke legal innovations and solutions to business leaders, dealmakers, and investors in Thailand.” Source: RevenueBase Database · checked Sep 28, 2026
19	Legal Asean	Strong evidence	Bangkok, ThailandHQ checked Sep 28, 2026	1-10	8 contacts →
	Strong evidence “We assist both domestic and foreign clients with their investment needs.” Source: RevenueBase Database · checked Sep 28, 2026
20	Kasame & Associates Co., LTD	Indirect evidence	Yan Nawa District, ThailandHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
21	Ilct LTD	Partial evidence	Sathorn, ThailandHQ checked Sep 28, 2026	51-200	7 contacts →
	Partial evidence “ILCT is a full-service law firm over 54-year history.” Source: RevenueBase Database · checked Sep 28, 2026
22	ONE LAW	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Company name : ONE Law Office Business category : Law firm Description : Legal and Tax Advisory Phone number : 02 219 080 554 Website : http://onelaw.co.th/ Business location …” Source: RevenueBase Database · checked Sep 28, 2026
23	H&p Herrera And Partners	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	1-10	6 contacts →
	Partial evidence “H&P or Herrera and Partners is a law firm in Thailand with an important area of practice in Corporate and Litigation.” Source: RevenueBase Database · checked Sep 28, 2026
24	Umpire Legal	Partial evidence	Bangkok, ThailandHQ checked Sep 28, 2026	11-50	6 contacts →
	Partial evidence “Umpire Legal is a Bangkok-based law firm specialising in the legal aspects of registering and operating businesses in Thailand.” Source: RevenueBase Database · checked Sep 28, 2026
25	MCG	Indirect evidence	Silom, ThailandHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Maverick Consulting Group (MCG) is a Bangkok-based consultancy specialising in public affairs, government relations, strategic communications, and business diplomacy.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: foreign investment law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names foreign investment law firms.
Partial evidence: Its own public description names part of foreign investment law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name foreign investment law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 111 foreign investment law firms based in Thailand

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Foreign investment law firms based in Thailand at a glance

As of Sep 28, 2026

28.8%Verified-email coverage

10.8Average contacts per company

11-50Median size (employees)

71.2%Largest-city concentration · Bangkok

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Thailand, so it is reported there. Company counts and contact totals on this page are exact for Thailand, over 111 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among foreign investment law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Thailand whose own description of what they do matches “foreign investment law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names foreign investment law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among foreign investment law firms, and records with no verified work email. Companies headquartered outside Thailand are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 346 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Foreign investment law firms by metro

Foreign investment law firms in Bangkok79

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names foreign investment law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many foreign investment law firms are there based in Thailand?

RevenueBase identified 111 foreign investment law firms headquartered in Thailand as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Baker Mckenzie Thailand, headquartered in Thailand, tops this list with the largest team on record.

Which city has the most foreign investment law firms?

Bangkok leads with 79 headquartered companies, followed by Bangkok City (4) and Pattaya (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 346 verified decision-maker contacts tracked across these 111 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.