Company lists · Data refreshed September 2026

Top 25 Big six law firms worldwide

Name: Big six law firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 24,313 companies tracked

RevenueBase identified 24,313 big six law firms worldwide as of September 2026 and tracks 848,208 professional contacts across them, including 441,239 with verified work emails and 273,253 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers big six law firms worldwide, 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 23, 2026. Country and city lists for big six law firms follow the table.

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 23, 2026 86% judged on-target in blind review

24,313Companies

848,208Contacts tracked

441,239Verified emails

273,253Mobile numbers

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The 25 largest big six law firms worldwide

Ranked by team size

Top 25 of 24,313 big six law firms worldwide, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to big six 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	Norton Rose Fulbright	Indirect evidence	London, United StatesHQ checked Sep 23, 2026	5,001-10,000	8,589 contacts →
	Indirect evidence “Norton Rose Fulbright provides a full scope of legal services to the world’s preeminent corporations and financial institutions.” Source: RevenueBase Database · checked Sep 23, 2026
2	Kirkland & Ellis	Partial evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	5,001-10,000	8,449 contacts →
	Partial evidence “As one of the world’s leading law firms, we serve a broad range of clients with market-leading practices in private equity, M&A and other complex corporate transactions…” Source: RevenueBase Database · checked Sep 23, 2026
3	Latham & Watkins	Partial evidence	New York, United StatesHQ checked Sep 23, 2026	1,001-5,000	8,191 contacts →
	Partial evidence “Latham & Watkins is a global law firm with more than 3,500 lawyers in its offices located in Asia, Europe, the Middle East and the United States.” Source: RevenueBase Database · checked Sep 23, 2026
4	Clifford Chance	Partial evidence	London, United KingdomHQ checked Sep 23, 2026	5,001-10,000	7,673 contacts →
	Partial evidence “We are a global law firm dedicated to creating advantage for our clients.” Source: RevenueBase Database · checked Sep 23, 2026
5	White & Case LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	7,485 contacts →
	Partial evidence “White & Case is a global law firm with longstanding offices in the markets that matter today.” Source: RevenueBase Database · checked Sep 23, 2026
6	Linklaters	Partial evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	6,805 contacts →
	Partial evidence “Linklaters is a leading global law firm, supporting and investing in the future of our clients wherever they do business.” Source: RevenueBase Database · checked Sep 23, 2026
7	A&o Shearman	Partial evidence	Hamburg, United KingdomHQ checked Sep 23, 2026	5,001-10,000	6,574 contacts →
	Partial evidence “A&O Shearman transforms the way law is practiced, to deliver unparalleled results for our clients' most complex matters – everywhere in the world.” Source: RevenueBase Database · checked Sep 23, 2026
8	Freshfields	Partial evidence	London, United KingdomHQ checked Sep 23, 2026	5,001-10,000	6,487 contacts →
	Partial evidence “Freshfields is a global firm with over 280 years’ experience of anticipating change, setting new standards and shaping the future of law.” Source: RevenueBase Database · checked Sep 23, 2026
9	Jones DAY	Indirect evidence	Washington, DC, United StatesHQ checked Sep 23, 2026	5,001-10,000	5,941 contacts →
	Indirect evidence “With its singular tradition and widely recognized record of client service, Jones Day provides formidable legal talent across multiple disciplines and jurisdictions through the…” Source: RevenueBase Database · checked Sep 23, 2026
10	Greenberg Traurig, LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	5,325 contacts →
	Indirect evidence “Greenberg Traurig, LLP has more than 3,200 lawyers across 51 locations in the United States, Europe, the Middle East, Latin America, and Asia.” Source: RevenueBase Database · checked Sep 23, 2026
11	Sidley Austin LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	1,001-5,000	5,169 contacts →
	Partial evidence “Sidley is an elite global law firm.” Source: RevenueBase Database · checked Sep 23, 2026
12	K&l Gates	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,861 contacts →
	Indirect evidence “At K&L Gates, we foster an inclusive and collaborative environment across our fully integrated global platform that enables us to diligently combine the knowledge and expertise of…” Source: RevenueBase Database · checked Sep 23, 2026
13	Morgan, Lewis & Bockius LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,832 contacts →
	Partial evidence “From our offices in strategic hubs of commerce, law, and government across North America, Asia, Europe, and the Middle East, we work with clients ranging from established, global…” Source: RevenueBase Database · checked Sep 23, 2026
14	Ashurst	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	4,611 contacts →
	Indirect evidence “Ashurst has combined with Perkins Coie to form Ashurst Perkins Coie.” Source: RevenueBase Database · checked Sep 23, 2026
15	Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,540 contacts →
	Indirect evidence “Skadden, Arps, Slate, Meagher & Flom LLP and Affiliates delivers the highest quality advice and novel solutions to legal challenges, enabling clients to achieve their business…” Source: RevenueBase Database · checked Sep 23, 2026
16	Holland & Knight LLP	Partial evidence	Tampa, FL, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,317 contacts →
	Partial evidence “Holland & Knight is a global law firm with more than 2,200 lawyers and other professionals in 35 offices throughout the world.” Source: RevenueBase Database · checked Sep 23, 2026
17	Mayer Brown	Partial evidence	Chicago, IL, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,177 contacts →
	Partial evidence “Mayer Brown is a leading international law firm, positioned to represent the world’s major corporations, funds and financial institutions in their most important and complex…” Source: RevenueBase Database · checked Sep 23, 2026
18	Eversheds Sutherland	Partial evidence	London, United KingdomHQ checked Sep 23, 2026	5,001-10,000	3,981 contacts →
	Partial evidence “A pioneering global law practice, we provide high quality legal advice and innovation worldwide.” Source: RevenueBase Database · checked Sep 23, 2026
19	Gibson Dunn	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,735 contacts →
	Partial evidence “Gibson Dunn is a leading global law firm, advising clients on significant transactions and disputes.” Source: RevenueBase Database · checked Sep 23, 2026
20	Ropes & Gray LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,515 contacts →
	Partial evidence “Ropes & Gray, a preeminent, global law firm, has been ranked in the top-three on The American Lawyer's prestigious "A-List" for eight consecutive years and listed on Law.com’s UK…” Source: RevenueBase Database · checked Sep 23, 2026
21	Squire Patton Boggs	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,343 contacts →
	Partial evidence “Squire Patton Boggs is a full service global law firm providing insight at the point where law, business and government meet, giving you a voice, supporting your ambitions and…” Source: RevenueBase Database · checked Sep 23, 2026
22	Cooley LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,341 contacts →
	Indirect evidence “Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.” Source: RevenueBase Database · checked Sep 23, 2026
23	Gowling WLG	Partial evidence	United StatesHQ checked Sep 23, 2026	1,001-5,000	3,320 contacts →
	Partial evidence “Gowling WLG is an international law firm created by the combination of Gowlings, a leading Canadian law firm, and Wragge Lawrence Graham & Co (WLG), a leading UK-based…” Source: RevenueBase Database · checked Sep 23, 2026
24	Addleshaw Goddard	Indirect evidence	London, United KingdomHQ checked Sep 23, 2026	1,001-5,000	3,097 contacts →
	Indirect evidence “Welcome to Addleshaw Goddard (AG).” Source: RevenueBase Database · checked Sep 23, 2026
25	Lewis Brisbois	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,079 contacts →
	Partial evidence “Established in 1979, Lewis Brisbois Bisgaard & Smith LLP is a national, full-service law firm with more than 1,600 attorneys and 54 offices in 30 states and the District of…” Source: RevenueBase Database · checked Sep 23, 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: big six 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 big six law firms.
Partial evidence: Its own public description names part of big six law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big six 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 24,313 big six law firms worldwide

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Big six law firms worldwide at a glance

As of Sep 23, 2026

52.0%Verified-email coverage

32.2%Mobile-number coverage

34.9Average contacts per company

1-10Median size (employees)

4.8%Largest-city concentration · Sao Paulo

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

13,578

11-50

7,743

51-200

2,077

201-500

446

501-1,000

172

1,001-5,000

183

5,001-10,000

10001+

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 big six 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.
Coverage: 37 countries, largest first: the United States, Brazil, France, Spain, Canada, the United Kingdom, Germany, Italy, Mexico, Australia and 27 more. Country and city lists for big six law firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “big six 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 big six 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 big six law firms, and records with no verified work email.
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, 441,239 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 23, 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.

Big six law firms by location

151 lists · largest first

Every Big six law firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 big six 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 big six law firms are there worldwide?

RevenueBase identified 24,313 big six law firms worldwide 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?

Norton Rose Fulbright, headquartered in London, tops this list with the largest team on record.

Which country has the most big six law firms?

The United States leads with 9,943 companies, followed by Brazil (4,314) and France (1,097). Every big six law firms list by country and city is linked on this page.

Which city has the most big six law firms?

Sao Paulo leads with 1166 headquartered companies, followed by New York (668) and Paris (598).

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 441,239 verified decision-maker contacts tracked across these 24,313 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 23, 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.