Company lists · Data refreshed September 2026

Top 25 International government relations firms worldwide

Name: International government relations firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 3,730 companies tracked

RevenueBase identified 3,730 international government relations firms worldwide as of September 2026 and tracks 33,512 professional contacts across them, including 13,079 with verified work emails. The United States is the largest market and Washington the largest hub.

This list covers international government relations firms worldwide, 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 20, 2026. Country and city lists for international government relations firms follow the table.

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 20, 2026 86% judged on-target in blind review

3,730Companies

33,512Contacts tracked

13,079Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest international government relations firms worldwide

Ranked by team size

Top 25 of 3,730 international government relations firms worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to international government relations 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	FGS Global	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,814 contacts →
	Indirect evidence “FGS Global is the strategic leadership advisory for a complex world.” Source: RevenueBase Database · checked Sep 20, 2026
2	Brunswick Group	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	1,563 contacts →
	Indirect evidence “Brunswick is a global advisory firm.” Source: RevenueBase Database · checked Sep 20, 2026
3	Bracewell LLP	Strong evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	501-1,000	933 contacts →
	Strong evidence “Bracewell LLP is a leading law and government relations firm.” Source: RevenueBase Database · checked Sep 20, 2026
4	CFC BIG Ideas	Strong evidence	Kyiv, UkraineHQ checked Sep 20, 2026	n/a	414 contacts →
	Strong evidence “СFC Big Ideas is a communications agency specializing in international projects, government relations & PR.” Source: RevenueBase Database · checked Sep 20, 2026
5	Mercury Public Affairs, LLC	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	390 contacts →
	Strong evidence “Mercury is a national bipartisan government relations and strategic communications firm.” Source: RevenueBase Database · checked Sep 20, 2026
6	DKC	Strong evidence	New York, NY, United StatesHQ checked Sep 20, 2026	201-500	349 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
7	CAL Y Mayor	Strong evidence	MexicoHQ checked Sep 20, 2026	501-1,000	337 contacts →
	Strong evidence “International consulting firm dedicated to enhance goverment relations, academy and industrial projects, in private and public sectors.” Source: RevenueBase Database · checked Sep 20, 2026
8	DGA Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	266 contacts →
	Indirect evidence “DGA Group is a global advisory firm that helps clients protect – and grow – what they have built in today’s complex business environment.” Source: RevenueBase Database · checked Sep 20, 2026
9	Capstone	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	260 contacts →
	Partial evidence “Capstone is a global strategy firm helping corporations, industries, and investors navigate the local, national, and international policy and regulatory landscape.” Source: RevenueBase Database · checked Sep 20, 2026
10	Cornerstone Government Affairs	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	255 contacts →
	Strong evidence “Cornerstone Government Affairs is a full-service, bipartisan, employee-owned firm specializing in government relations and lobbying, public affairs, strategic communications, and…” Source: RevenueBase Database · checked Sep 20, 2026
11	BGR Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	243 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
12	Portland	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	201-500	229 contacts →
	Indirect evidence “Portland is a consultancy specialising in public affairs, corporate affairs and geopolitics.” Source: RevenueBase Database · checked Sep 20, 2026
13	Flint Global	Indirect evidence	London, United KingdomHQ checked Sep 20, 2026	51-200	214 contacts →
	Indirect evidence “Flint specialises in advising businesses and investors on how to navigate and surmount the policy, political, regulatory and competition challenges they face in European and…” Source: RevenueBase Database · checked Sep 20, 2026
14	Dga-Albright Stonebridge Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	187 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
15	Mcallister & Quinn	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	170 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
16	Bowergroupasia	Partial evidence	Washington, United StatesHQ checked Sep 20, 2026	201-500	169 contacts →
	Partial evidence “BGA is the government affairs firm for companies and capital deployers whose success across the Indo-Pacific and Africa depends on how governments decide and act.” Source: RevenueBase Database · checked Sep 20, 2026
17	Invariant	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	166 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
18	Political Intelligence Brussels	Indirect evidence	Brussels, BelgiumHQ checked Sep 20, 2026	n/a	163 contacts →
	Indirect evidence “Political Intelligence is an independent public affairs consultancy, with offices in Brussels, Lisbon, London, Madrid.” Source: RevenueBase Database · checked Sep 20, 2026
19	Prospectiva Public Affairs Latam	Partial evidence	São Paulo, BrazilHQ checked Sep 20, 2026	51-200	144 contacts →
	Partial evidence “We are a full-service Public Affairs consultancy specializing in Latin America, with over 20 years of experience building connections between governments, companies, and…” Source: RevenueBase Database · checked Sep 20, 2026
20	BMJ Consultores Associados	Strong evidence	Brasilia, BrazilHQ checked Sep 20, 2026	51-200	139 contacts →
	Strong evidence “BMJ & Associates is a Brazilian consulting firm specialized in International Trade, Government Affairs, Tax Analysis, Strategic Communication and Regulatory Affairs.” Source: RevenueBase Database · checked Sep 20, 2026
21	Vriens & Partners	Partial evidence	SingaporeHQ checked Sep 20, 2026	51-200	134 contacts →
	Partial evidence “Vriens & Partners is Southeast Asia’s leading government affairs consultancy, with over 115 staff and 50 advisors across 9 offices in capitals around the region and in Washington…” Source: RevenueBase Database · checked Sep 20, 2026
22	Strategycorp	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	51-200	130 contacts →
	Indirect evidence “Being right isn't enough.” Source: RevenueBase Database · checked Sep 20, 2026
23	Global Counsel	Indirect evidence	Doha, United KingdomHQ checked Sep 20, 2026	51-200	125 contacts →
	Indirect evidence “Global Counsel is an advisory firm that works with clients to navigate the critical area between business, politics and policymaking.” Source: RevenueBase Database · checked Sep 20, 2026
24	National Journal	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	124 contacts →
	Indirect evidence “We deliver insightful journalism, produce custom content and editable slides, and advise organizations on their advocacy and PAC engagement strategies.” Source: RevenueBase Database · checked Sep 20, 2026
25	ACTUM	Indirect evidence	Los Angeles, United StatesHQ checked Sep 20, 2026	51-200	121 contacts →
	Indirect evidence “Actum is a global consulting firm built to solve complex problems at the intersection of business, politics and media.” Source: RevenueBase Database · checked Sep 20, 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: international government relations 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 international government relations firms.
Partial evidence: Its own public description names part of international government relations firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international government relations 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 3,730 international government relations firms worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 13,079 reachable decision-makers.

Free signup · no credit card

View the full list →

International government relations firms worldwide at a glance

As of Sep 20, 2026

39.0%Verified-email coverage

9.0Average contacts per company

1-10Median size (employees)

12.6%Largest-city concentration · Washington

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

2,784

11-50

768

51-200

133

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 government relations 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.
Coverage: Every country. Country and city lists for international government relations firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “international government relations 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 international government relations 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 international government relations firms, and records with no verified work email.
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, 13,079 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 20, 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 government relations firms by location

20 lists · largest first

Every International government relations firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 international government relations 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 international government relations firms are there worldwide?

RevenueBase identified 3,730 international government relations firms worldwide 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?

FGS Global, headquartered in New York, tops this list with the largest team on record.

Which country has the most international government relations firms?

The United States leads with 1,714 companies, followed by Canada (158) and the United Kingdom (108). Every international government relations firms list by country and city is linked on this page.

Which city has the most international government relations firms?

Washington leads with 471 headquartered companies, followed by London (83) and Paris (73).

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 13,079 verified decision-maker contacts tracked across these 3,730 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 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 3,730 international government relations firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

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.