Company lists · Data refreshed September 2026

Top 25 Cross-border law firms based in the United States

Name: Cross-border law firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 10,837 companies tracked

RevenueBase identified 10,837 cross-border law firms headquartered in the United States as of September 2026 and tracks 474,988 professional contacts across them, including 268,602 with verified work emails and 234,633 with mobile numbers. New York is the largest hub.

This list covers cross-border 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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 29, 2026 86% judged on-target in blind review

10,837Companies

474,988Contacts tracked

268,602Verified emails

234,633Mobile numbers

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The 25 largest cross-border law firms based in the United States

Ranked by team size

Top 25 of 10,837 cross-border law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to cross-border 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	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	10001+	9,815 contacts →
	Indirect evidence “Baker McKenzie empowers clients to compete in the global economy.” Source: RevenueBase Database · checked Sep 29, 2026
2	Kirkland & Ellis	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 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 29, 2026
3	Latham & Watkins	Partial evidence	New York, United StatesHQ checked Sep 29, 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 29, 2026
4	White & Case LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 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 29, 2026
5	Jones DAY	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 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 29, 2026
6	Sidley Austin LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	5,169 contacts →
	Partial evidence “Sidley is an elite global law firm.” Source: RevenueBase Database · checked Sep 29, 2026
7	K&l Gates	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 29, 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 29, 2026
8	Morgan, Lewis & Bockius LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 29, 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 29, 2026
9	Skadden, Arps, Slate, Meagher & Flom LLP And Affiliates	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 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 29, 2026
10	Holland & Knight LLP	Partial evidence	Tampa, FL, United StatesHQ checked Sep 29, 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 29, 2026
11	Mayer Brown	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 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 29, 2026
12	Gibson Dunn	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
13	Goodwin	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,582 contacts →
	Indirect evidence “At Goodwin, we live your business.” Source: RevenueBase Database · checked Sep 29, 2026
14	Ropes & Gray LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 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 29, 2026
15	Simpson Thacher & Bartlett LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,429 contacts →
	Partial evidence “Simpson Thacher & Bartlett LLP is one of the world’s leading international law firms.” Source: RevenueBase Database · checked Sep 29, 2026
16	Squire Patton Boggs	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 29, 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 29, 2026
17	Cooley LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 29, 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 29, 2026
18	Lewis Brisbois	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 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 29, 2026
19	Orrick, Herrington & Sutcliffe LLP	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,066 contacts →
	Partial evidence “Orrick is a global law firm focused on serving the Technology & Innovation, Energy & Infrastructure, Finance and Life Sciences & HealthTech sectors.” Source: RevenueBase Database · checked Sep 29, 2026
20	Paul Hastings	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	3,045 contacts →
	Indirect evidence “With widely recognized elite teams in finance, mergers & acquisitions, private equity, restructuring and special situations, litigation, employment and real estate, Paul Hastings…” Source: RevenueBase Database · checked Sep 29, 2026
21	Foley & Lardner LLP	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,884 contacts →
	Indirect evidence “Foley & Lardner LLP stands at the nexus of the Energy & Infrastructure, Health Care & Life Sciences, Innovative Technology, and Manufacturing Sectors.” Source: RevenueBase Database · checked Sep 29, 2026
22	Gordon Rees Scully Mansukhani, LLP	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,846 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 29, 2026
23	Perkins Coie	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,746 contacts →
	Indirect evidence “Perkins Coie has combined with Ashurst to form Ashurst Perkins Coie.” Source: RevenueBase Database · checked Sep 29, 2026
24	King & Spalding	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,725 contacts →
	Partial evidence “King & Spalding is an international law firm that represents a broad array of clients, including half of the Fortune Global 100, with 1,300 lawyers in 26 offices in the United…” Source: RevenueBase Database · checked Sep 29, 2026
25	Davis Polk & Wardwell LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	2,721 contacts →
	Partial evidence “Davis Polk & Wardwell LLP (including its associated entities) is an elite global law firm with world-class practices across the board.” Source: RevenueBase Database · checked Sep 29, 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: cross-border 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 cross-border law firms.
Partial evidence: Its own public description names part of cross-border law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cross-border 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 10,837 cross-border law firms based in the United States

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Cross-border law firms based in the United States at a glance

As of Sep 29, 2026

56.5%Verified-email coverage

49.4%Mobile-number coverage

43.8Average contacts per company

1-10Median size (employees)

8.0%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

6,494

11-50

2,972

51-200

893

201-500

218

501-1,000

101

1,001-5,000

115

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 31.0d

116,8120–30

150,47931–60

8,92661–90

28490–180

1,222180+

Company record updated

Median 88.0d

00–30

145,34431–60

113,74661–90

210,29690–180

23,171180+

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 cross-border 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 the United States whose own description of what they do matches “cross-border 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 cross-border 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 cross-border 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 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, 268,602 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 29, 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.

Cross-border law firms by metro

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 cross-border 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 cross-border law firms are there based in the United States?

RevenueBase identified 10,837 cross-border 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 cross-border law firms?

New York leads with 868 headquartered companies, followed by Chicago (333) and Los Angeles (326).

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 268,602 verified decision-maker contacts tracked across these 10,837 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 29, 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.