Company lists · Data refreshed September 2026

Top 25 Foreign investment law firms based in Washington, United States

Name: Foreign investment law firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 168 companies tracked

RevenueBase identified 168 foreign investment law firms headquartered in Washington, United States as of September 2026 and tracks 17,826 professional contacts across them, including 10,513 with verified work emails. Across the United States, New York is the largest hub for this category (407 companies); Washington follows with 168.

This list covers foreign investment law firms headquartered in Washington, 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 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

168Companies

17,826Contacts tracked

10,513Verified emails

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The 25 largest foreign investment law firms based in Washington, United States

Ranked by team size

Top 25 of 168 foreign investment law firms based in Washington, United States, 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	Arnold & Porter	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,333 contacts →
	Indirect evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 28, 2026
2	Venable LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,790 contacts →
	Partial evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 28, 2026
3	Crowell & Moring	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,602 contacts →
	Partial evidence “Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.” Source: RevenueBase Database · checked Sep 28, 2026
4	Steptoe LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,207 contacts →
	Indirect evidence “In more than 100 years of practice, Steptoe* has earned an international reputation for vigorous representation of clients before governmental agencies, successful advocacy in…” Source: RevenueBase Database · checked Sep 28, 2026
5	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 28, 2026
6	Keller And Heckman LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	230 contacts →
	Partial evidence “Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.” Source: RevenueBase Database · checked Sep 28, 2026
7	Consilio Services LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1,001-5,000	168 contacts →
	Partial evidence “It all starts with our mission: To be a trusted advisor that brings expertise to tackle any legal challenge that multinational corporations and law firms face, whenever and…” Source: RevenueBase Database · checked Sep 28, 2026
8	The Cohen Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	110 contacts →
	Indirect evidence “Who We Are A talented team of experts with years of experience in both government and industry, with a passion for finding solutions and a deep understanding of the institutions…” Source: RevenueBase Database · checked Sep 28, 2026
9	Cassidy Levy Kent	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	79 contacts →
	Partial evidence “Cassidy Levy Kent (CLK) is an international law firm that focuses on legal and policy issues raised by cross-border transactions, trade controls, trade remedy litigation…” Source: RevenueBase Database · checked Sep 28, 2026
10	Maggio Kattar Nahajzer Alexander PC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	55 contacts →
	Partial evidence “Maggio Kattar has been recognized as one of the top Immigration Law firms in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
11	Berliner Corcoran & Rowe LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	44 contacts →
	Partial evidence “Berliner Corcoran & Rowe LLP is a boutique law firm focused on international law, export controls/sanctions/customs/OFAC/CFIUS, litigation, corporate and intellectual property law.” Source: RevenueBase Database · checked Sep 28, 2026
12	Sparacino Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Sparacino PLLC is a high-stakes commercial litigation law firm headquartered in Washington, D.C.” Source: RevenueBase Database · checked Sep 28, 2026
13	Picard Kentz & Rowe LLP	Strong evidence	Washington, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Strong evidence “Picard Kentz & Rowe is a firm expert in international law, international litigation and arbitration, international trade and investment, and advocacy on behalf of clients…” Source: RevenueBase Database · checked Sep 28, 2026
14	GKG Law, P.C	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “Beginning in 1955, GKG Law remains dedicated to crafting the best approach to meet our clients’ needs.” Source: RevenueBase Database · checked Sep 28, 2026
15	Bevilacqua Pllc	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	24 contacts →
	Partial evidence “Bevilacqua PLLC is a boutique transactional law firm that understands entrepreneurs and provides goal oriented legal services that facilitate agreement and closure.” Source: RevenueBase Database · checked Sep 28, 2026
16	Visapro Immigration Services LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	23 contacts →
	Partial evidence “VisaPro US immigration lawyers help foreign companies, investors and professionals secure visas to work & live in U.S.” Source: RevenueBase Database · checked Sep 28, 2026
17	Mowry & Grimson	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Indirect evidence “Mowry & Grimson PLLC advises corporations and governments on critical trade matters ranging from unfair trade litigation to U.S.” Source: RevenueBase Database · checked Sep 28, 2026
18	BSA Legal Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	21 contacts →
	Partial evidence “The BSA Legal Group is a boutique international law and consulting firm dedicated to providing creative and cost effective solutions to its international and domestic based…” Source: RevenueBase Database · checked Sep 28, 2026
19	Schagrin Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “Schagrin Associates was founded in 1984 and aims to address the international trade concerns of our clients through all available legislative, judicial, and administrative avenues.” Source: RevenueBase Database · checked Sep 28, 2026
20	Harkins Cunningham LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	18 contacts →
	Partial evidence “Harkins Cunningham LLP is a law firm engaged in optimizing risk and opportunities in complex matters in highly regulated and politicized environments.” Source: RevenueBase Database · checked Sep 28, 2026
21	Kalbian Hagerty LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	17 contacts →
	Partial evidence “Kalbian Hagerty LLP is an international general practice law firm with offices in Washington, D.C, Abu Dhabi, U.A.E, and New York City and a strategic alliance with a prominent…” Source: RevenueBase Database · checked Sep 28, 2026
22	Veritas LAW	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	16 contacts →
	Partial evidence “A full-service business law firm, Veritas Law has expertise in corporate and transactional law, litigation, and licensing.” Source: RevenueBase Database · checked Sep 28, 2026
23	Trade Pacific Pllc	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “Formed in 2004, our lawyers and international trade consultants counsel clients to comply with and capitalize on the complex and evolving U.S.” Source: RevenueBase Database · checked Sep 28, 2026
24	Amsterdam & Partners LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “Amsterdam & Partners LLP is a leading international law firm with offices in London and Washington, DC.” Source: RevenueBase Database · checked Sep 28, 2026
25	Levine, Blaszak, Block & Boothby, LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Since it was founded in 1993, LB3 has been the leading firm guiding large customers through a maze of legal, technical, financial, and regulatory issues to close world-class…” 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 168 foreign investment law firms based in Washington, United States

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Foreign investment law firms based in Washington, United States at a glance

As of Sep 28, 2026

59.0%Verified-email coverage

106.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

113

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 168 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 Washington, United States 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 Washington 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, 10,513 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 in the United States

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 Washington, United States?

RevenueBase identified 168 foreign investment law firms headquartered in Washington, 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?

Arnold & Porter, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most foreign investment law firms?

New York leads the United States with 407 headquartered companies, followed by Washington (168) and Miami (160).

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 10,513 verified decision-maker contacts tracked across these 168 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.