Company lists · Data refreshed September 2026

Top 11 International law firms based in Washington, United States

Name: International 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 4, 2026 177 companies tracked

RevenueBase identified 177 company matches for international law firms associated with Washington, United States as of September 2026 and tracks 18,389 professional contacts across them, including 10,225 with verified work emails. Across the United States, New York is the largest hub for this category (543 companies); Washington has 177.

This list covers company matches for international law firms associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. 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 RevenueBase SmartSearch · Exact Recorded Sep 4, 2026 How this list was built

177Companies

18,389Contacts tracked

10,225Verified emails

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The 11 largest international law firms based in Washington, United States

Ranked by team size

Top 11 of 177 company matches for international law firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 4, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Arnold & Porter	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	1,001-5,000	2,324 contacts →
	Exact match “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
2	Venable LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	1,001-5,000	1,791 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
3	Finnegan, Henderson, Farabow, Garrett & Dunner, LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	501-1,000	942 contacts →
	Exact match “When your most valuable assets are ideas, innovation, and brand-you need the best.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
4	Wiley Rein LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	501-1,000	576 contacts →
	Exact match “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
5	Williams & Connolly LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	501-1,000	424 contacts →
	Exact match “Williams & Connolly is recognized as one of the world’s premier litigation firms.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
6	Dickstein Shapiro LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	501-1,000	292 contacts →
	Exact match “Dickstein Shapiro LLP, Market Leading Specialty Firm (SM), is internationally recognized for its work with clients, from start-ups to Fortune 500 corporations.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
7	Hausfeld	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	201-500	267 contacts →
	Exact match “Hausfeld successfully resolves disputes for its clients, driven by its bold approach and pioneering experience.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
8	Consilio Services LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	1,001-5,000	167 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
9	Jackson & Campbell, P.C	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	126 contacts →
	Exact match “For more than 130 years, Jackson & Campbell has been the law firm to which local, regional, and national businesses, associations, and Washingtonians turn for skilled and…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
10	Cassidy Levy Kent	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	77 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase
11	HWG LLP	Exact match	Washington, DC, United StatesHQ recorded Sep 4, 2026	51-200	71 contacts →
	Exact match “HWG LLP is a boutique law firm designed to offer clients access to top tier legal talent without unnecessary overhead.” Recorded in the RevenueBase company graph · Sep 4, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “international law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 11 of 177 international law firms based in Washington, United States

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International law firms based in Washington, United States at a glance

As of Sep 4, 2026

55.6%Verified-email coverage

103.9Average contacts per company

1-10Median size (employees)

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 177 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Washington, United States whose business descriptions match “international law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 10,225 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

International law firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “international law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 177 company matches for international law firms associated with Washington, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Arnold & Porter tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most international law firms?

New York leads the United States with 543 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 10,225 professional contacts with verified work emails tracked across these 177 companies; direct dials are available where recorded.

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.

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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.