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Company lists · Data refreshed September 2026

Top 22 International law firms based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 6,083 companies tracked

RevenueBase identified 6,083 international law firms headquartered in the United States as of September 2026 and tracks 421,881 professional contacts across them, including 228,263 with verified work emails and 200,815 with mobile numbers. New York is the largest hub.

This list covers international law firms headquartered in the United States, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review
6,083Companies
421,881Contacts tracked
228,263Verified emails
200,815Mobile numbers
Unlock all 6,083 companies Free signup · no credit card · 500 free credits

The 22 largest international law firms based in the United States

Ranked by team size
Top 22 of 6,083 international law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names international law firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Baker MckenzieIndirect evidence
Chicago, IL, United StatesHQ checked Sep 4, 202610001+9,837

“Baker McKenzie empowers clients to compete in the global economy.”

Source: company website · checked Sep 4, 2026
2
Kirkland & EllisPartial evidence
Chicago, TX, United StatesHQ checked Sep 4, 20265,001-10,0008,319

“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: company website · checked Sep 4, 2026
3
Latham & WatkinsPartial evidence
New York, United StatesHQ checked Sep 4, 20261,001-5,0008,234

“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: company website · checked Sep 4, 2026
4
Greenberg Traurig, LLPIndirect evidence
New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0005,317

“Greenberg Traurig, LLP has more than 3,100 lawyers across 51 locations in the United States, Europe, the Middle East, Latin America, and Asia.”

Source: company website · checked Sep 4, 2026
5
Sidley Austin LLPPartial evidence
Chicago, TX, United StatesHQ checked Sep 4, 20261,001-5,0005,122

“Sidley is an elite global law firm.”

Source: company website · checked Sep 4, 2026
6
K&l GatesIndirect evidence
Pittsburgh, FL, United StatesHQ checked Sep 4, 20261,001-5,0004,851

“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: company website · checked Sep 4, 2026
7
Morgan, Lewis & Bockius LLPPartial evidence
Philadelphia, CA, United StatesHQ checked Sep 4, 20261,001-5,0004,818

“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: company website · checked Sep 4, 2026
8
Mayer BrownStrong evidence
Chicago, TX, United StatesHQ checked Sep 4, 20261,001-5,0004,209

“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: company website · checked Sep 4, 2026
9
Simpson Thacher & Bartlett LLPStrong evidence
New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0003,409

“Simpson Thacher & Bartlett LLP is one of the world’s leading international law firms.”

Source: company website · checked Sep 4, 2026
10
Squire Patton BoggsPartial evidence
Cleveland, CA, United StatesHQ checked Sep 4, 20261,001-5,0003,335

“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: company website · checked Sep 4, 2026
11
Cooley LLPIndirect evidence
Palo Alto, CA, United StatesHQ checked Sep 4, 20261,001-5,0003,314

“Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.”

Source: company website · checked Sep 4, 2026
12
Lewis BrisboisPartial evidence
Los Angeles, CA, United StatesHQ checked Sep 4, 20261,001-5,0003,066

“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: company website · checked Sep 4, 2026
13
Paul HastingsIndirect evidence
Worldwide, CA, United StatesHQ checked Sep 4, 20261,001-5,0003,028

“With widely recognized elite teams in finance, mergers & acquisitions, private equity, restructuring and special situations, litigation, employment and real estate, Paul Hastings…”

Source: company website · checked Sep 4, 2026
14
Foley & Lardner LLPIndirect evidence
Milwaukee, MA, United StatesHQ checked Sep 4, 20261,001-5,0002,894

“Foley & Lardner LLP stands at the nexus of the Energy & Infrastructure, Health Care & Life Sciences, Innovative Technology, and Manufacturing Sectors.”

Source: company website · checked Sep 4, 2026
15
Gordon Rees Scully Mansukhani, LLPPartial evidence
San Francisco, CA, United StatesHQ checked Sep 4, 20261,001-5,0002,807

“As the only full-service law firm with offices and attorneys in all 50 states, Gordon Rees Scully Mansukhani delivers maximum value to our clients by combining the resources of a…”

Source: company website · checked Sep 4, 2026
16
Davis Polk & Wardwell LLPPartial evidence
New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0002,764

“Davis Polk & Wardwell LLP (including its associated entities) is an elite global law firm with world-class practices across the board.”

Source: company website · checked Sep 4, 2026
17
Perkins CoieIndirect evidence
Seattle, WI, United StatesHQ checked Sep 4, 20261,001-5,0002,734

“Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.”

Source: company website · checked Sep 4, 2026
18
Ogletree DeakinsPartial evidence
Atlanta, SC, United StatesHQ checked Sep 4, 20261,001-5,0002,716

“Ogletree Deakins is one of the largest labor and employment law firms representing management in all types of employment-related legal matters.”

Source: company website · checked Sep 4, 2026
19
Morrison FoersterIndirect evidence
San Francisco, DC, United StatesHQ checked Sep 4, 20261,001-5,0002,660

“Morrison Foerster transforms complexity into advantage.”

Source: company website · checked Sep 4, 2026
20
Paul, Weiss, Rifkind, Wharton & Garrison LLPPartial evidence
New York, NY, United StatesHQ checked Sep 4, 20261,001-5,0002,652

“Paul, Weiss, Rifkind, Wharton & Garrison LLP is a global law firm of more than 1,500 lawyers focused on helping clients navigate their most complex legal and business challenges.”

Source: company website · checked Sep 4, 2026
21
LittlerPartial evidence
San Francisco, CA, United StatesHQ checked Sep 4, 20261,001-5,0002,549

“Littler is the largest global employment and labor law practice, representing management in all aspects of employment and labor law and serving as a single-source solution…”

Source: company website · checked Sep 4, 2026
22
Husch BlackwellPartial evidence
20+ U.s. Offices, TX, United StatesHQ checked Sep 4, 20261,001-5,0002,516

“Husch Blackwell is a different kind of law firm–structured around our clients’ industries and built on a culture of selfless service.”

Source: company website · checked Sep 4, 2026

Showing 22 of 6,083 international law firms based in the United States

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International law firms based in the United States at a glance

As of Sep 4, 2026
1-10Median size (employees)
New YorkLargest hub · 543 HQs
200,815Contacts with mobile numbers
Sep 4, 2026Data refreshed

Companies by employee count

1-10
3,115
11-50
1,833
51-200
683
201-500
205
501-1,000
95
1,001-5,000
104
5,001-10,000
6
10001+
6

Verified emails by last verification

0–30
0
31–60
20,390
61–90
119,878
90–180
86,838
180+
1,157

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 international law firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “international law firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among international law firms, and records with no verified work email. Companies headquartered outside United States 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 an evidence 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, 228,263 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 4, 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.

International law firms by metro

Frequently asked

How many international law firms are there based in the United States?

RevenueBase identified 6,083 international law firms headquartered in the United States 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, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most international law firms?

New York leads with 543 headquartered companies, followed by Chicago (205) and Washington (177).

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 228,263 verified decision-maker contacts tracked across these 6,083 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 4, 2026.

Ready to reach these companies? Verified emails and direct dials for all 6,083 international law firms based in the United States. Start with a free account, no credit card.

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Related lists

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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 SmartSearch, 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.

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