Company lists · Data refreshed September 2026

Top 25 International government relations firms based in the United States

Name: International government relations 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 20, 2026 1,714 companies tracked

RevenueBase identified 1,714 company matches for international government relations firms associated with the United States as of September 2026 and tracks 16,246 professional contacts across them, including 7,516 with verified work emails. Washington is the largest hub.

This list covers company matches for international government relations firms associated with the 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 20, 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 20, 2026 How this list was built

1,714Companies

16,246Contacts tracked

7,516Verified emails

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The 25 largest international government relations firms based in the United States

Ranked by team size

Top 25 of 1,714 company matches for international government relations firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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	FGS Global	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,814 contacts →
	Exact match “FGS Global is the strategic leadership advisory for a complex world.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Bracewell LLP	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	501-1,000	933 contacts →
	Exact match “Bracewell LLP is a leading law and government relations firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Mercury Public Affairs, LLC	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	51-200	390 contacts →
	Exact match “Mercury is a national bipartisan government relations and strategic communications firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	DKC	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	201-500	349 contacts →
	Exact match “DKC is a full service public relations, marketing and government affairs firm and part of the Acceleration Community of Companies, Based in New York City, and with offices in Los…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	DGA Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	266 contacts →
	Exact match “DGA Group is a global advisory firm that helps clients protect – and grow – what they have built in today’s complex business environment.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Capstone	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	260 contacts →
	Exact match “Capstone is a global strategy firm helping corporations, industries, and investors navigate the local, national, and international policy and regulatory landscape.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Cornerstone Government Affairs	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	255 contacts →
	Exact match “Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	BGR Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	243 contacts →
	Exact match “The Services You Need BGR Group offers an integrated suite of bipartisan lobbying, strategic communications and advocacy solutions that help meet challenges in a risky…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Dga-Albright Stonebridge Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	187 contacts →
	Exact match “Albright Stonebridge Group (ASG) is part of DGA Group, a global advisory firm that helps clients protect – and grow – what they have built in today’s complex business environment.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Mcallister & Quinn	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	170 contacts →
	Exact match “McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Invariant	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	166 contacts →
	Exact match “Invariant is a bipartisan business advisory firm, providing strategic advice to companies, trade associations, non-profits, and individuals on how to make Washington work for them.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	National Journal	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	124 contacts →
	Exact match “We deliver insightful journalism, produce custom content and editable slides, and advise organizations on their advocacy and PAC engagement strategies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Public & Government Affairs At Edelman	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	121 contacts →
	Exact match “Edelman’s public and government affairs team of consultants are trusted and experienced public affairs advisors-including former government officials, political advisors, policy…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	The Cohen Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	110 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Multistate	Exact match	Arlington, VA, United StatesHQ recorded Sep 20, 2026	51-200	104 contacts →
	Exact match “MultiState is a full-service state and local government relations company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Stateside Associates	Exact match	Arlington, VA, United StatesHQ recorded Sep 20, 2026	51-200	102 contacts →
	Exact match “Stateside Associates is the largest state and local government affairs firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Monument Advocacy	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	97 contacts →
	Exact match “Monument Advocacy is a bipartisan firm that offers government relations, public affairs, strategic and crisis communications, and digital services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	TFG The Ferguson Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	84 contacts →
	Exact match “Founded in 1982, The Ferguson Group has a proud record of success advocating on behalf of local communities.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	VAN Scoyoc Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	82 contacts →
	Exact match “For more than 30 years, Van Scoyoc Associates (VSA) has been developing and executing tailored government affairs strategies for its clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Mclarty Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	80 contacts →
	Exact match “McLarty Associates, An Ankura Company, is the global strategy firm led by former Clinton White House Chief of Staff Thomas F.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Cassidy & Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	79 contacts →
	Exact match “At Cassidy and Associates, we make Washington work for you.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	The Southern Group-Florida	Exact match	Tallahassee, FL, United StatesHQ recorded Sep 20, 2026	51-200	72 contacts →
	Exact match “Every day across Florida, throughout our network of 60+ lobbyists, we are navigating Tallahassee, advancing interests, amplifying voices, influencing decision makers, cutting…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	HB Strategies	Exact match	Jefferson City, MO, United StatesHQ recorded Sep 20, 2026	51-200	71 contacts →
	Exact match “HBS creates an encouraging public landscape through its integrated services of state and federal lobbying, leadership strategies, and public affairs” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Omnicom Public Relations	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	5,001-10,000	70 contacts →
	Exact match “Omnicom Public Relations brings together more than of the best minds in the communications industry to deliver meaningful, measurable results for clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Ballard Partners	Exact match	Tallahassee, FL, United StatesHQ recorded Sep 20, 2026	11-50	69 contacts →
	Exact match “Ballard Partners specializes in all aspects of governmental and public affairs, including legislative and executive agency advocacy in Washington, DC, Florida, Boston, Tel Aviv…” Recorded in the RevenueBase company graph · Sep 20, 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 government relations 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 25 of 1,714 international government relations firms based in the United States

See the full list, filter by size, metro and specialty, and access 7,516 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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International government relations firms based in the United States at a glance

As of Sep 20, 2026

46.3%Verified-email coverage

9.5Average contacts per company

1-10Median size (employees)

27.5%Largest-city concentration · Washington

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,363

11-50

287

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,714 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 the United States whose business descriptions match “international government relations 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 7,516 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 20, 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 government relations firms by metro

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 government relations firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 1,714 company matches for international government relations firms associated with the 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?

FGS Global tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most international government relations firms?

Washington leads with 471 company records, followed by New York (64) and Austin (50).

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 7,516 professional contacts with verified work emails tracked across these 1,714 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 20, 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.